Is there a way to convert SGP311 to SGP321? - Xperia Tablet Z Q&A, Help & Troubleshooting

Hello
I wonder if there's a way to add 3G/4G Capabilities to my SGP311 (Xpria Tablet WIFI)
I've noticed that I can add a sim slot from eBay, but I don't know if it will work... I guess I also need some Modem part...
please advice
thanks
:good:

Unfortunately not, as the 311 version is missing a physical radio band/modem required for receiving and transmitting cellular signals.

Related

[Q] Cyanogenmod 10 - make calls?

Hi there.
I've just bought a XTZ LTE and have been wondering if installing Cyanogenmod would make it possible to call from it?
I love how it is now, but I would prefer if I could make/recieve phonecalls too.
It's either Cyanogenmod or Skype. Would prefer to keep my old number and not pay 2 phone bills.
Minarch said:
Hi there.
I've just bought a XTZ LTE and have been wondering if installing Cyanogenmod would make it possible to call from it?
I love how it is now, but I would prefer if I could make/recieve phonecalls too.
It's either Cyanogenmod or Skype. Would prefer to keep my old number and not pay 2 phone bills.
Click to expand...
Click to collapse
I would also like to know if this is possible?
Unless you guys are in Japan, which is the only country in the world so far where carriers have implemented voice calling over LTE, rather than GSM or CDMA - the rom you run on your XTZ isn't going to make any difference because to make regular phone calls over GSM or CDMA you need to have the actual hardware radio for that and this tablet doesn't have it.
Apo11on said:
Unless you guys are in Japan, which is the only country in the world so far where carriers have implemented voice calling over LTE, rather than GSM or CDMA - the rom you run on your XTZ isn't going to make any difference because to make regular phone calls over GSM or CDMA you need to have the actual hardware radio for that and this tablet doesn't have it.
Click to expand...
Click to collapse
But the SGP321 supports both GSM and WCDMA in addition to LTE, so that's not really helpful. There is however the question of whether the modem itself supports voice over GSM/WCDMA as the radio could be either the same or similar to the one in the Xperia Z phone.
Djhg2000 said:
But the SGP321 supports both GSM and WCDMA in addition to LTE, so that's not really helpful. There is however the question of whether the modem itself supports voice over GSM/WCDMA as the radio could be either the same or similar to the one in the Xperia Z phone.
Click to expand...
Click to collapse
WCDMA is just an alternative name for UMTS. It's a 3G data connection protocol. AFAIK no carrier in the world uses that for voice calls.I was not aware LTE version of XTZ had GSM radio, but I checked online and it turns out to be true. Therefore, it's possible to modify XTZ LTE firmware to unlock voice calling, but I doubt very much Cyanogenmod did it. It would have been big news and would have been all over tech blogs and it also would have been listed in CM nightlies changelog for XTZ LTE: http://10.1.cmxlog.com/?device=pollux
Thank you for answering.
I found a different approach.
First I tried Skype. Payed for a number and everything but found out that Skype doesn't support recieving SMS.
So now I've ordered a 4G-subscription to my XTZ.
Using my old Samsung Galaxy Tab 2 3G with my current subscription I can send all calls and texts to my XTZ through the app: Tablet Talk.
That way I can make and recieve calls on my XTZ through my Galaxy Tab 2 without problem.
There might be around ~400 ms lag on calls if they aren't on the same network, but I can live with that.
Minarch said:
Thank you for answering.
I found a different approach.
First I tried Skype. Payed for a number and everything but found out that Skype doesn't support recieving SMS.
So now I've ordered a 4G-subscription to my XTZ.
Using my old Samsung Galaxy Tab 2 3G with my current subscription I can send all calls and texts to my XTZ through the app: Tablet Talk.
That way I can make and recieve calls on my XTZ through my Galaxy Tab 2 without problem.
There might be around ~400 ms lag on calls if they aren't on the same network, but I can live with that.
Click to expand...
Click to collapse
Are you sure on this? I'm pretty sure there is no app or rom that will allow you to send/receive voice to another device for use with a GSM call.
I think tablet talk just allows you to control calls from a tablet device and send them to a bluetooth headset but won't actually let you use the tablet as if it were a blutetooth headset (bluetooth profiles are missing/not supported in android I believe)
Does that make any sense?
jonathanp said:
Are you sure on this? I'm pretty sure there is no app or rom that will allow you to send/receive voice to another device for use with a GSM call.
I think tablet talk just allows you to control calls from a tablet device and send them to a bluetooth headset but won't actually let you use the tablet as if it were a blutetooth headset (bluetooth profiles are missing/not supported in android I believe)
Does that make any sense?
Click to expand...
Click to collapse
After hours of research I found you that you're right.
So I've forwarded calls to my Skype-number.
Much easier.
I can tell you that on my new SGP321 I am able to send/recieve SMS - I only realised because EE sent me a message to welcome me to the network.
Sent from my SGP321 using xda app-developers app
NEUR0M4NCER said:
I can tell you that on my new SGP321 I am able to send/recieve SMS - I only realised because EE sent me a message to welcome me to the network.
Sent from my SGP321 using xda app-developers app
Click to expand...
Click to collapse
Sorry to tag onto the end of an old thread, but the basic question of phone calls via the XTZ still seems to be hanging in the air. I've got a T-mobile voice/text/mobile internet sim in my SGP321, and I can send and receive texts via this subscription.
I just don't understand why phone calls can't be enabled: the tablet obviously has audio hardware (microphone and speakers), so support for audio is obviously built into the firmware; it accepts a SIM with a package including voice minutes; it apparently supports the same GSM spec as the Samsung Galaxy 10 (which has phone capability) (I'd give a link to the comparison, but apparently as a new user I'm not allowed to do so!)
So what's the problem? I guess it comes down to whether or not it's caused by an omission in hardware or software. If the former, we're stuck; if the latter - well, surely it should be possible - somehow?
Apo11on said:
WCDMA is just an alternative name for UMTS. It's a 3G data connection protocol. AFAIK no carrier in the world uses that for voice calls. http://10.1.cmxlog.com/?device=pollux
Click to expand...
Click to collapse
UMTS is not just a data connection protocol; it's an entire 3G system. WCDMA is not "just another name for UMTS"; it's best thought of one of three different signal types UMTS can use. (WCDMA, aka UMTS-FDD, is used by almost all UMTS operators.)
Virtually every network operator on Earth with an active UMTS network uses it for voice, with a few exceptions (two or three Internet-only operators). They would be completely stupid not to - UMTS provides between 40 and 60 active voice calls per sector, vs. GSM's 7.
AT&T Mobility, T-Mobile, EE, Vodafone, Orange, O2, you name it; if it operates UMTS, you can bet voice calls are running over UMTS.

Help with radio/modem flash for weak signal - Elephone P3000S

Hi All,
I'm new here. Hoping someone can give me some advice/direction on my issue.
Just received two Elephone P3000S phones (one for me, one for gift). I'm in Canada on Koodo network, but don't get 4G because we are pretty rural (west of Ottawa), so we are using WCDMA/HSPA+ 850/1900 MHz.
The P3000S supports the following:
GSM:850/900/1800/1900, WCDMA:850/900/1900/2100(HSDPA), FDD-LTE:800/1800/2100/2600
At home, on our old phones (Samsung Galaxy SIIX), we would get cell signals of -93 dBm or better (not great, but usable). With the P3000S phones in the same location (both of them), the signal is -110 dBm or worse (not usable - not able to make calls or send texts). There are no protective cases on the phones to interfere with signal.
I've tried the the following:
- choosing 3G only and WCDMA only networks and editng APN settings specifically for Koodo
- changing/adding build.prop entries for ro.ril
- posting in Elephone forums - no help
- contacting Elephone - no response
The P3000S is new - just came available mid-December. Elephone has issued one update since then. It did not help my signal problem.
I know this could be a hardware/antenna issue, but since the phone is new, opening it up to tweak/boost the antenna is not really an option - a last resort if I can't sell the phones to someone who is located where they will work.
So, my next step (I think), is to try flashing a new modem, but I have no idea where to start with that to find one that might be compatible with Koodo and the P3000S. I'm willing to try several, but it's very new to me.
Relevant info:
Octacore MTK6592 + MTK6290
Android version: 4.4.2
Baseband: MOLY.LR9.W1423.MD.LWTG.MP.V3.P3
I'd really appreciate any advice.
Thanks in advance.
Anyone have any ideas where I might start?
heath3000 said:
Hi All,
I'm new here. Hoping someone can give me some advice/direction on my issue.
Just received two Elephone P3000S phones (one for me, one for gift). I'm in Canada on Koodo network, but don't get 4G because we are pretty rural (west of Ottawa), so we are using WCDMA/HSPA+ 850/1900 MHz.
The P3000S supports the following:
GSM:850/900/1800/1900, WCDMA:850/900/1900/2100(HSDPA), FDD-LTE:800/1800/2100/2600
At home, on our old phones (Samsung Galaxy SIIX), we would get cell signals of -93 dBm or better (not great, but usable). With the P3000S phones in the same location (both of them), the signal is -110 dBm or worse (not usable - not able to make calls or send texts). There are no protective cases on the phones to interfere with signal.
I've tried the the following:
- choosing 3G only and WCDMA only networks and editng APN settings specifically for Koodo
- changing/adding build.prop entries for ro.ril
- posting in Elephone forums - no help
- contacting Elephone - no response
The P3000S is new - just came available mid-December. Elephone has issued one update since then. It did not help my signal problem.
I know this could be a hardware/antenna issue, but since the phone is new, opening it up to tweak/boost the antenna is not really an option - a last resort if I can't sell the phones to someone who is located where they will work.
So, my next step (I think), is to try flashing a new modem, but I have no idea where to start with that to find one that might be compatible with Koodo and the P3000S. I'm willing to try several, but it's very new to me.
Relevant info:
Octacore MTK6592 + MTK6290
Android version: 4.4.2
Baseband: MOLY.LR9.W1423.MD.LWTG.MP.V3.P3
I'd really appreciate any advice.
Thanks in advance.
Click to expand...
Click to collapse
Hello, i bought same phone and seems signal is ok. But i am probably not so far from BTS.
It seems your phones has worse antena then phone before, you can not solve this by software (ril mod, baseband etc.). You have to try to solve it by hardware mod, probably extend antena to get higher gain. Under and around NFC antena on back cover is enought space tu use copper foil strips, you can try make unclosed frame with connection on main antena.
Hi MioCZ,
Thanks for your thoughts. So you don't think a different region (i.e. North America) baseband/modem would help at all? The hardware tweak is my last resort - I'm not particularly fond of opening up a new device. And I don't exactly know what to look for as far as NFC antenna or main antenna. Any idea where these are located on this phone?
Again - thanks for your insight.
EDIT: Oh, I see you reference the antenna on the back cover as the NFC antenna. I can try to work with something there without opening up the phone? Or do I need to make a mod to connect the new copper to the main antenna from there? So I guess I need to know where the main antenna is. Is the 4G/LTE antenna the same one used for 3G/WCDMA/UMTS/HSPA? I'm not sure if there are separate ones. If so, the 4G/LTE antenna location is pretty clearly marked.
EDIT AGAIN: I answered my own question by reading up on cell phone antennas. Gotta love Google. So, I'm going to try to rig something up to the main antenna, which I assume is under the section marked "LTE 4G" in the upper right hand corner (when looking at the back of the phone). I'll post my results when I finish.
Engineering mode
You can call *#*#3646633#*# to enter to Engineering mode. It should have antenna test somewhere in menus.
Hi
heath3000 said:
Anyone have any ideas where I might start?
Click to expand...
Click to collapse
Hi, have you solved the issues on your phone?
I believe this is the same problem that I am facing with coloros. In fact he does not write the correct base band and when he writes, does not connect to the network 3G / 4G or make calls. is a mistake that just found this unit ... which makes the port of ROMs for this device and portability including future versions of android. It is not compatible with any other MTK6592 I know.
lena cui said:
Hi, have you solved the issues on your phone?
Click to expand...
Click to collapse
No, nothing I have tried helped.

[Q] Please, puhleeze help me configure PadFoneX for T-Mobile 4G and HSPDA + !!

Unlocked AT&T-branded PadFoneX. I'm getting low reception on Band 4 and no HSPDA+ reception whatsoever.
I upgraded the unit to the PadFoneS firmware and did the four Asus upgrades to bring it up to date with no better result. Applied the 99.99.99 down-grade back to KitKat and still no love. I use the APN settings for Fast T-Mobile USA and have tried others as well. My Huawei MediaPad Pro T1 8.0 gets strong T-Mobile reception and then switches over to HSPDA+ coverage once I enter my office building. The PadFone gets weak 4G LTE and then switches over to EDGE once I enter the building.
I was really hoping to replace my 8-inch Huawei with the PadFone but the radio reception just doesn't compare and I can't stand being forced to use EDGE inside my office building when I know that T-Mobile HSPDA+ coverage is usable within my building using the Huawei Phablet.
Can someone please please please help me in "fine tuning" this thing for T-Mobile. By the way the PadFone is rooted and I've unlocked the bootloader as well. Maybe there is updated modem firmware to flash? I just don't know what else I can do..
If you get HSPDA+ coverage from T-Mobile on your PadFone can you please share your configuration and APN settings??
Thank you!!!!!!
Chris R.
I have a PFX flashed to PFS Kitkat running on T-Mobile. Connects to the LTE network fine using the fast.t-mobile.com APN. Yes, reception seems to be on the weak side, but it gets the job done for me. Suspect that Mediapad gets a better signal due to it being larger = larger antenna.
HSPA works fine for me as well, but as this is an AT&T/International device, you'll only connect to HSPA on Band 2 (1900MHz). It lacks HSPA Band 4 (1700MHz/2100MHz) for T-Mobile's more extensive 3G network. It looks like that Mediapad has HSPA Band 4 (http://pdadb.net/index.php?m=specs&id=7233&c=huawei_mediapad_t1_8.0_pro_4g_td-lte_t1-821l), so that's probably why it's able to get HSPA signal while the PF does not.
Thank you!
xtermmin said:
I have a PFX flashed to PFS Kitkat running on T-Mobile. Connects to the LTE network fine using the fast.t-mobile.com APN. Yes, reception seems to be on the weak side, but it gets the job done for me. Suspect that Mediapad gets a better signal due to it being larger = larger antenna.
HSPA works fine for me as well, but as this is an AT&T/International device, you'll only connect to HSPA on Band 2 (1900MHz). It lacks HSPA Band 4 (1700MHz/2100MHz) for T-Mobile's more extensive 3G network. It looks like that Mediapad has HSPA Band 4 (http://pdadb.net/index.php?m=specs&id=7233&c=huawei_mediapad_t1_8.0_pro_4g_td-lte_t1-821l), so that's probably why it's able to get HSPA signal while the PF does not.
Click to expand...
Click to collapse
Thank you for your detailed answer! Finally, someone that understands this stuff! Hey, could I get the exact model number of your model?? I'm wondering if I could buy one like yours and then have it unlocked..curious...
Thanks!!!
Chris R.
crodgers79 said:
Thank you for your detailed answer! Finally, someone that understands this stuff! Hey, could I get the exact model number of your model?? I'm wondering if I could buy one like yours and then have it unlocked..curious...
Thanks!!!
Chris R.
Click to expand...
Click to collapse
My device is the AT&T Asus Padfone X (ASUS_T00D). On the white label under the back cover it lists the manufacturing date as 2014/05/31 and is H/W Revision 1.6 (PFX was launched in July 2014, so this is probably a launch model). Bought it from Ebay a year ago pre-unlocked. Used it on AT&T's firmware for a few months before flashing the latest Asus Padfone S (ASUS_T00N) Kitkat firmware, "WW_11.10.7.18". I think I had to manually set my APN, but was able to connect fine.
Looking at the signal levels, the PFX pulls in -108dBm at my desk, while my Moto E2 pulls in -100dBm, both on LTE Band 4. Moto devices tend to have better radios, but I didn't expect the smaller, budget Moto E2 to pull in a better signal than the PFX.
OK, now I'm confused....
xtermmin said:
My device is the AT&T Asus Padfone X (ASUS_T00D). On the white label under the back cover it lists the manufacturing date as 2014/05/31 and is H/W Revision 1.6 (PFX was launched in July 2014, so this is probably a launch model). Bought it from Ebay a year ago pre-unlocked. Used it on AT&T's firmware for a few months before flashing the latest Asus Padfone S (ASUS_T00N) Kitkat firmware, "WW_11.10.7.18". I think I had to manually set my APN, but was able to connect fine.
Looking at the signal levels, the PFX pulls in -108dBm at my desk, while my Moto E2 pulls in -100dBm, both on LTE Band 4. Moto devices tend to have better radios, but I didn't expect the smaller, budget Moto E2 to pull in a better signal than the PFX.
Click to expand...
Click to collapse
I pulled the back cover off of mine, it too is a T00D and, get this, manufacturing date was 2014/05/22 (!!!) FCC ID is MSQT00D, and H/W is 1.6 (!!).
I too did the X-to-S conversion and yesterday I applied each successive update until I got to the very latest 12.2.2.43 (16 Dec 2015).
So if we have nearly identical hardware, is there anything that I can do to improve reception? Could you send me the settings you used for APN?
Thanks!
Chris R.
By the way, your Moto is the better device, the lower the db number the better AFAIK..
crodgers79 said:
I pulled the back cover off of mine, it too is a T00D and, get this, manufacturing date was 2014/05/22 (!!!) FCC ID is MSQT00D, and H/W is 1.6 (!!).
I too did the X-to-S conversion and yesterday I applied each successive update until I got to the very latest 12.2.2.43 (16 Dec 2015).
So if we have nearly identical hardware, is there anything that I can do to improve reception? Could you send me the settings you used for APN?
Thanks!
Chris R.
Click to expand...
Click to collapse
Don't know how to improve the reception, but here's my APN settings:
Name: T-Mobile LTE
APN: fast.t-mobile.com
MCC: 310
MNC: 260
APN Type: default
APN protocol: IPv4
APN roaming protocol: IPv4
Bearer: Unspecified
Everything else is set to Not Set/None.
I didn't set up the MMS proxy as I'm using a tablet data-only plan on the PFX. (I think data-only plans come with free SMS/MMS, but I don't use it.)
crodgers79 said:
By the way, your Moto is the better device, the lower the db number the better AFAIK..
Click to expand...
Click to collapse
I know, which is why I was surprised that the cheap budget Moto E2 got a better signal than the PFX
crodgers79 said:
By the way, your Moto is the better device, the lower the db number the better AFAIK..
Click to expand...
Click to collapse
I probably know why you are not receiving a a good signal on your device.
The thing is when you do the conversion, from padfone x to padfone s, the partiton gets overwritten and causes some of the bands to be lost.
That partition is called the efs partition, and probably you have lost some bands that probably would have worked better before you flashed.
The side effects can be seen through the software when additional call settings does not work. (SIM doesnt get recognized)
That is a known problem, and to avoid that you had to back up the efs partiton prior to the conversion so you could restore those kinds of connections after the conversion.
--- You had to use adam outlers repacked twrp version to do all that.
I know many of the guides there have replaced mine but they forgot that one thing that has been talked over, and thanks to tjsooley and the people during that time, they were able to figure it out.
Thanks..but consider this..
Justatechie said:
I probably know why you are not receiving a a good signal on your device.
The thing is when you do the conversion, from padfone x to padfone s, the partiton gets overwritten and causes some of the bands to be lost.
That partition is called the efs partition, and probably you have lost some bands that probably would have worked better before you flashed.
The side effects can be seen through the software when additional call settings does not work. (SIM doesnt get recognized)
That is a known problem, and to avoid that you had to back up the efs partiton prior to the conversion so you could restore those kinds of connections after the conversion.
--- You had to use adam outlers repacked twrp version to do all that.
I know many of the guides there have replaced mine but they forgot that one thing that has been talked over, and thanks to tjsooley and the people during that time, they were able to figure it out.
Click to expand...
Click to collapse
Thanks! I did read through all these threads searching for an answer before I posted my question. the first time I did the X-to-S conversion I thought exactly what you said (destroyed the efs partition containing the modem info). So I went back and loaded the 99.99.99.99 version posted on the Asus site which is supposed to restore it to factory settings and back to KitKat but that had no effect. Since 99.99.99 is for the PadFone S maybe that doesn't make use of the partition under KitKat, I don't know.
What I would dearly love to load is a flashable version of the original AT&T software (thereby restoring the partition and the modem info). I saw one guy had posted TWRP backups of stock but when I tried to restore them to my phone the script bombed and it aborted.
I agree with the other gentleman, I need UMTS Band 4 - (1900/2100) for this thing to work well in my area and it looks like this phone doesn't support it. If I could find someone familiar with QPST to tell me if that band is unlockable that wold be great!
Thanks!!!!
Chris R.
Unfortunately QPST couldn't work with this device, idk know why.
You could find out by searching through using the xda search engine, but the question is, did you back up your modem for this device prior, because it could be restored when the phone is on a stock fw, then you could create an efs backup afterwards.
To answer the question with the tarp backups, those were created from the repacked twrp version so flash that first and back up everything before you restore back to at&t fw. I don't think the quarx version could work with that since the repacked was based on the nexus 5. (Similar parts) (be aware that you need to wait a couple of mins for the black screen to go away, on that version of twrp.)
The thing is that I could use band 2 and 4 on at&t with this fw, (I did not restore my efs partition since the conversion since I lucky live in a good area) but it looks like band 4 doesn't work for t-mobile, hmmm maybe it is incompatible like the other guy said, but we'll see. After wards you gotta see if these bands would restore upon restoring back to the at&t fw.
Justatechie said:
I probably know why you are not receiving a a good signal on your device.
The thing is when you do the conversion, from padfone x to padfone s, the partiton gets overwritten and causes some of the bands to be lost.
That partition is called the efs partition, and probably you have lost some bands that probably would have worked better before you flashed.
The side effects can be seen through the software when additional call settings does not work. (SIM doesnt get recognized)
That is a known problem, and to avoid that you had to back up the efs partiton prior to the conversion so you could restore those kinds of connections after the conversion.
--- You had to use adam outlers repacked twrp version to do all that.
I know many of the guides there have replaced mine but they forgot that one thing that has been talked over, and thanks to tjsooley and the people during that time, they were able to figure it out.
Click to expand...
Click to collapse
The EFS partition contains the modem, yes, but this isn't the issue here. When it comes to bands used in the USA, the Padfone S firmware has all the bands the Padfone X uses except for LTE Band 17, which is only used by AT&T, and would not affect T-Mobile in this case. I was able to use my PFX-converted-to-PFS on T-Mobile without restoring EFS fine.
Thanks!
xtermmin said:
The EFS partition contains the modem, yes, but this isn't the issue here. When it comes to bands used in the USA, the Padfone S firmware has all the bands the Padfone X uses except for LTE Band 17, which is only used by AT&T, and would not affect T-Mobile in this case. I was able to use my PFX-converted-to-PFS on T-Mobile without restoring EFS fine.
Click to expand...
Click to collapse
I think the PadFone's lack of UMTS Band 4 is what's keeping me from getting HSPDA+ inside my office building. Once I head into the building my 4G on Band 4 reverts to Edge (ugh!) and I have a 14Gb tethering plan so that I can run my tablet while inside the building..arrggh!
Thanks for your response!
Chris R.

Xperia Tablet Z4 - T-Mobile Support?

I about to buy this tablet, but have some concerns regarding the LTE version support with T-Mobile in the USA.
Can i use a phone sim with this tablet? **Just to be clear in regards to phone sim with T-Mobile i mean that i can use the tablet on a phone plan (voice+data) and not data only like they did in the Xperia Z3 Tablet Compact**
Does it support T-Mobiles LTE bands?
samurayx89 said:
I about to buy this tablet, but have some concerns regarding the LTE version support with T-Mobile.
Can i use a phone sim with this tablet?
Does it support T-Mobiles LTE bands?
Click to expand...
Click to collapse
Hi,
1. Yes with nano sim. Userguide: http://support.sonymobile.com/global-en/xperiaz4tablet/userguide/
2. You can download the whitepaper for th SGP771 here: http://developer.sonymobile.com/downloads/whitepapers/xperia-z4-tablet-sgp771-white-paper/
And see if the T-Mobiles band is supported. (And I have no doubt that it is supported)
killdozer56 said:
Hi,
1. Yes with nano sim. Userguide: http://support.sonymobile.com/global-en/xperiaz4tablet/userguide/
2. You can download the whitepaper for th SGP771 here: http://developer.sonymobile.com/downloads/whitepapers/xperia-z4-tablet-sgp771-white-paper/
And see if the T-Mobiles band is supported. (And I have no doubt that it is supported)
Click to expand...
Click to collapse
Just to be clear in regards to phone sim with T-Mobile i mean that i can use the tablet on a phone plan (voice+data) and not data only like they did in the Xperia Z3 Tablet Compact
samurayx89 said:
Just to be clear in regards to phone sim with T-Mobile i mean that i can use the tablet on a phone plan (voice+data) and not data only like they did in the Xperia Z3 Tablet Compact
Click to expand...
Click to collapse
Read the user guide "calling" page
killdozer56 said:
Read the user guide "calling" page
Click to expand...
Click to collapse
Doesn't say anything about T-Mobile in the US. Even when some tablets support it it is block by their network and if you put a phone sim card on it it will only do calls/sms and no data or you need to use a data-device sim card which doesnt support calls. Hence my question in regards to an specific provider.
I have a T-Mobile sim in mine right now. I can tell you that I DO NOT have a phone app in order to make calls. I am using a sim card from my second phone account. It connects to LTE fine and has good speeds on data. I am not sure if it's because the tablet is considered international or if it's blocked from T-Mobile. I contacted Sony and did not get much information.
I wish the OP or others would chime in about this. @legendindisguise may I ask what model yours is and where you got it from? What makes it more challenging is that the model number is SGP771 (right?) but for some it works for others not, so perhaps like the OP said the network is somehow blocking this feature?
Just to add to this post there is two model versions of the SGP771 with wifi and LTE I believe.
International version 43015809
Alledged US version 13035541
UK model ? Comes with keyboard 12957383
I just got a SIM card for my Xperia Z4 Tablet LTE (SGP771 / 13035541) on the AT&T network with a new AT&T account. This SIM is a new line with Phone+Data and I am having an issue making calls and making data connections (websites, etc..). I am still investigating and will update everyone when I figure something out. Odd thing is that the tablet connects to the network enough to display AT&T, the correct phone number assigned to the device, and 3 AT&T APNs, but nothing is working.
Inc8pable said:
I just got a SIM card for my Xperia Z4 Tablet LTE (SGP771 / 13035541) on the AT&T network with a new AT&T account. This SIM is a new line with Phone+Data and I am having an issue making calls and making data connections (websites, etc..). I am still investigating and will update everyone when I figure something out. Odd thing is that the tablet connects to the network enough to display AT&T, the correct phone number assigned to the device, and 3 AT&T APNs, but nothing is working.
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Does it show the inbuilt phone dialler?
Sent from my SM-N950U using Tapatalk
Yes I have the phone dialer
Sent from my [device_name] using XDA-Developers Legacy app
Totally forgot to update this post! Works great on the AT&T network. I did have to call AT&T to update the APN details but after that it works great. I can make phone calls and use the LTE data without any issues. I even took it to Spain and it worked great there too.

Question Anyone successfully enabled VOLTE on a UK network with the XQ-BC72?

Hey all, been using this phone for a while and even though I'm frustrated with the 888 chip's heat output I'm still using it for now. That said, next year most network providers are disabling 3G Networks and by extension, calls. I'd rather not have a £800 brick that can only call on Wi-Fi/WhatsApp so I'd like to know if anyone in the UK specifically has had success bypassing this issue. Is it as simple as flashing a different region firmware onto it? Is that even possible? All help/guidance is greatly appreciated, thank you.
Coleh said:
Hey all, been using this phone for a while and even though I'm frustrated with the 888 chip's heat output I'm still using it for now. That said, next year most network providers are disabling 3G Networks and by extension, calls. I'd rather not have a £800 brick that can only call on Wi-Fi/WhatsApp so I'd like to know if anyone in the UK specifically has had success bypassing this issue. Is it as simple as flashing a different region firmware onto it? Is that even possible? All help/guidance is greatly appreciated, thank you.
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I do know that the phone has to be supported by at least one vendor in your country (one which offers VoWifi/VoLTE). In that case, you'd just have to flash firmware associated with that vendor in your phone. There may be bloatware, depending on that vendor's customization.
Needless to say; your SIM card must also be provisioned for that feature by your own network provider.

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