No network after Display change - Xiaomi Redmi Note 4 Questions & Answers

Hello,
I helped a friend of mine changing the display for his redmi 4 note global edition from Ali-express (without frame).
For help we used a random instruction video on youtube from the channel "Reparacion moviles Granada"
Sorry I am not allowed to post links yet.
The display works fine, but he can not make a mobile network connection. We could not check mobile data, but i think its the same. Wifi works fine. In the settings the SIM-card is displayed, but without a number.
For me it looks like we just forgot to put in a connector or a screw.
Since we disessembled like the whole phone, maybe somebody can point on what can check first.
Even after some research I cant figure out where the gsm module or the antenna is located.
Thank you!
Edit: Problem solved, it was the obvious reason. the Coax-connector cable wasn't locked in place.

Related

dropped phone calls

First, let me say that searching XDA-DEV with google is not an easy task.
Anyhow, I'm having this issue of phone calls being dropped after 2 to 5 minutes of talking. Signal is strong, bluetooth or no bluetooth. Uninstalled apps that recently got installed and the problem still persist. Is there a system log of phone calls, etc that can help me troubleshoot this issue ?
I have X7501 running original stuff.
Thanks
marek101 said:
First, let me say that searching XDA-DEV with google is not an easy task.
Anyhow, I'm having this issue of phone calls being dropped after 2 to 5 minutes of talking. Signal is strong, bluetooth or no bluetooth. Uninstalled apps that recently got installed and the problem still persist. Is there a system log of phone calls, etc that can help me troubleshoot this issue ?
I have X7501 running original stuff.
Thanks
Click to expand...
Click to collapse
I would say it was almost certainly the fault of your network, a simple trick to test would be to go into the phone properties then into band and lock the band onto the old 2G signal instead of the fancy new 3G type and see what happens
PS do you really have an FM radio on your phone, does it use the Headphones as an aerial or does it just work !! is there any chance you can upload a screen shot of the radio app !
thanks in advance !

[Q] Dialer issue - phone reboots when making calls

Bought the Atrix last week and unlocked it with the help from the webshop as I'm in Belgium, no problem connecting to Mobistar wich is my provider and data connections works great. But I'm having real problems making phonecalls and recieving calls; the phone reboots or the dialer hangs and it looks like a call is going on when it's not, phone still works but flashing green in the notification area and it's impossible to hang up, need to reboot. This happens like 80% of the times I try to make a call. After a reboot it works fine to call and hang-up one or two times then it crashes again.
Also noted that my Dialer often runs twice in the Running Apps manager - is that normal??
Anyone having the same issues or know what to do, reinstall the Dialer app --> if so how? Is it a hardware or software problem??
A little more info: when I recieved the device it was in a sealed Atrix box but the phone was used and already had an active Blur account so I had to do a hard reset to be able to use it... --> was it returned 'cause of faulty dialer or radio... then resold to me... not nice if so...?
Tried to install dialer one app but it seems only to skin the original dialer...
It's a greate device and works great othervice but in the end it's still a phone... which should be able to make calls...
Help
Ive got an unlocked Atrix too and now in Germany, I have the same problem. Motorola should definitely look into this.
Here's a quick fix for it thou, (not permanent)....
1. type *#*#4636#*#* on the dialer
2. Chose Phone Information
3. Set preferred network to GSM only
Viola...its fixed
problem with this fix is that you wont be able to use your 3G network but the dialer should be working.
Thanks Nazrin (for both replies) !!
It sure did the trick, though no data access is not acceptable on a phone like this!!!
So this meens that all unlocked Atrix's in european GSM networks have the same problems? Haven't seen any others reporting this and there are quite a few in use I've noted in other forums.
Was thinking of trying to have mine replaced (which probably won't be easy and take long time...) but that won't change anything then??
We have to wait for the european version of Atrix rom I suppose??
Any others with the same problem??
No problems buddy, glad it worked..and i have to agree with you..this bug is unacceptable...it seems the phone just ***** up everytime it calls on utms (3g)...im sure there is more people with this problem...
Sent from my Supercharged MOTO ATX
I have the same problem
Hi guys, I have the same exact issue (I'm also in Belgium, on Mobistar). I'm somewhat glad to hear this is a generic issue, and not an issue with my specific phone. At least I can be fairly certain replacing it won't solve this issue then.
I made another post here before I came across this one, has a bit more info: we are seeing modem panics when using 3G + outbound call. I've also contacted Motorola support to no avail:
http://forum.xda-developers.com/showthread.php?t=1028771
You can also read there that I tried another operator, and it did not crash with that one (although 3G did disconnect).
Hopefully Motorola/Qualcomm will start to notice the bug when they release the phone globally, and release a fix.
Either that, or we all have phones from the same bad batch
This bug is really bad for users in europe....cant call on utms...
I really hope motorola takes this seriously cos if there's no fix via software updates then its moto gone for me
Guys, you are all on unlocked att atrix right? I do believe it is a simmiliar software glitch/bug/lock that you have porblems using it on non att networks as the problem with the wifi that it stops working for some of us (check the thread about it for more info). As all suggests there it is a config file problem, unfortunately i or anyone else doesnt know yet which one....
Yeah maybe..but funny thing is wifi is working without a glitch...will have to read that forum later...
Workaround options
So, since it seems we're not gonna get this fixed until there is a new radio/modem firmware available for flashing (and even then..), I've been looking for a workaround.
Found two potential applications that could do what we need: disable data completely when making an outgoing call, or switch to 2G:
- Sanity
- Superpower
I've tested the first (Sanity), and it does not work (fully). It does seem to disable data, but the bands aren't switched so our problem remains. I've contacted the developer here: http://tagliamonte.net/forum/thread-10.html. He seems to be very responsive, so given enough interest, I think he would add the functionality we require.
The second app I only came across today, and have not tried yet. It does not have a function to specifically switch bands when making an outgoing call, but it has a trigger for "Foreground application", so if we make that the dialer/contacts... Question remains if it will be able to do the switch.
Hopefully one of these will lead to a decent workaround for all of us!
Well done unknown...i will try these apps... but the real fix should be from moto...im always reading the net for anything that can solve this issue
reboots on incoming and outgoing calls
Same in Russia on Megafon network, I had to enter 4636 menu and use it as "GSM only". Even this does not fully solve problems, e.g. call forwarding does not show the new destination number while it does actually make the phone divert calls correctly.
My hope is that UK release will trigger new software version which will address this issue. ANYONE has news on this?
FIXED!
YAY! I just fixed this issue
What you need to do: flash the radio from this thread:
http://forum.xda-developers.com/showthread.php?t=1052914
You have to use RSD-lite, since sbf_flash will not work. Flash the 1.87 baseband and enjoy working HSPA (including unlocked upload speeds ^^)
Now I can finally appreciate this phone fully
Enjoy guys!
_unknown said:
YAY! I just fixed this issue
What you need to do: flash the radio from this thread:
http://forum.xda-developers.com/showthread.php?t=1052914
You have to use RSD-lite, since sbf_flash will not work. Flash the 1.87 baseband and enjoy working HSPA (including unlocked upload speeds ^^)
Now I can finally appreciate this phone fully
Enjoy guys!
Click to expand...
Click to collapse
Worked for me as well..brilliant!!!! its working here in germany.....but I wonder the telstra radio will work in my home country with frequencies of 900/2100
Motorola Atrix restart when placing a call
I just got the same exact Dialer problem now, but the flash radio file is gone* in the pointed post, and I don't know exactly how to flash the radio.
Someone can help me? I need the radio file and step by step instruction to how to flash it.
BTW my Atrix 4G works perfect for a year till this Dialer problem started past week.
I also use my phone as a full Linux computer when docked, and it works very fine.
Thanks
* The file was on megaupload, that was closed
No answer
Why I never got an answer of any post I did?
There is something wrong?
Eli
elijacob said:
I just got the same exact Dialer problem now, but the flash radio file is gone* in the pointed post, and I don't know exactly how to flash the radio.
Someone can help me? I need the radio file and step by step instruction to how to flash it.
BTW my Atrix 4G works perfect for a year till this Dialer problem started past week.
I also use my phone as a full Linux computer when docked, and it works very fine.
Thanks
* The file was on megaupload, that was closed
Click to expand...
Click to collapse
Forget about those ways
klingsurf said:
Bought the Atrix last week and unlocked it with the help from the webshop as I'm in Belgium, no problem connecting to Mobistar wich is my provider and data connections works great. But I'm having real problems making phonecalls and recieving calls; the phone reboots or the dialer hangs and it looks like a call is going on when it's not, phone still works but flashing green in the notification area and it's impossible to hang up, need to reboot. This happens like 80% of the times I try to make a call. After a reboot it works fine to call and hang-up one or two times then it crashes again.
Also noted that my Dialer often runs twice in the Running Apps manager - is that normal??
Anyone having the same issues or know what to do, reinstall the Dialer app --> if so how? Is it a hardware or software problem??
A little more info: when I recieved the device it was in a sealed Atrix box but the phone was used and already had an active Blur account so I had to do a hard reset to be able to use it... --> was it returned 'cause of faulty dialer or radio... then resold to me... not nice if so...?
Tried to install dialer one app but it seems only to skin the original dialer...
It's a greate device and works great othervice but in the end it's still a phone... which should be able to make calls...
Help
Click to expand...
Click to collapse
[Sorry for problem in speaking]
i had that problem too , im using CM13 with Marshmallow Version of android
So . the easy way is :
***** search "Default" in settings. then choose " System dialer" as Default ! just it ****
but if there is no search bar in your setting . try this patch:
Android 6 : Setting/Apps then click the setting icon on top(may be diffrent in your case) , then Click on "default ...." then choose " System dialer" as Default! :fingers-crossed:
but in some cases that it didnt work . they have to reinstall gapps .
Or in official Roms , reset will be usefull
any quastions?

Question~~~ T.T

Please Kindly Help Me...
i just got my htc desire v(dual sim) last month. everything went smooth but just recently my phone self internet isnt working anymore... i cant access anything relate to internet but my phone does have sufficient credit and the network provider is just working fine (i tried my brother phone).
anyone know how to fixed this issue? Sorry for my poor grammar...and really really thanks for helping.
* I live in Brunei Darussalam, my network provider is DST.my phone alwalys did the updates.
kindlyhelpme said:
Please Kindly Help Me...
i just got my htc desire v(dual sim) last month. everything went smooth but just recently my phone self internet isnt working anymore... i cant access anything relate to internet but my phone does have sufficient credit and the network provider is just working fine (i tried my brother phone).
anyone know how to fixed this issue? Sorry for my poor grammar...and really really thanks for helping.
* I live in Brunei Darussalam, my network provider is DST.my phone alwalys did the updates.
Click to expand...
Click to collapse
First of all, does the SIM-Card work generally - did you have try on SIM2 ?
I have another problem with my SIM Card - it will never start working, if I make a restart or quickboot (only if I shut down and start new)
... I solved this by going to the Settings of the DUAL NETWORK MANAGER and stop and restart the card by tapping twice on SIM1 Symbol - then it starts working without any issues. This is the most annoying thing on my device.
This problem starts, as I got another SIMCARD with a smaller golden Chip...
our Device has sometimes problems with the latest SIMCARD-Types
(Hardware-Problem from HTC) as I have found out.
You can also reset the provider settings to standard (Mobile Network Settings)
restart the phone. Then it will find a "changed Simcard" and you can choose the provider settings again.
Let me know if I could help you

GPS hardware fix

Hi Members,
I'm searching for some info which can help me fix/repair my GPS functionality.
Cause: My S6 got little bit flooded. I brought it to service point in order to clean and dry it out. For sure there was SUB board replaced.
Problem: GPS is not working at all. Any application that require this functionality simply fails on GPS fix.
When an application starts, the little GPS bar icon blinks for 3 times and than just disappears.
Questions: Where is the GPS module/antenna located?
Is there a possibility to replace that module/antenna?
Or maybe it is integrated to motherboard?
Maybe service did some mistake like did not connect a wire or something...
Add on: All other radios are working correctly.
Firmware has been flashed (x2)
Any help will be appreciated.
I've find out that the module is attached to the motherboard (pic.1) and the module name is - BCM4773
So, I'm done with fixing unless motherboard will be replaced
But, there is another thing to consider. If I go to the "service menu" using the *#0*# code and perform the SensorHUB Test I get the following result (pic.2):
MCU name:
BCM4773IUB2G
PASS
Looks like the module is working fine or I understand it wrong.
Please can someone with good knowledge, comment the above?
Install this app from Google store.. https://play.google.com/store/apps/details?id=com.chartcross.gpstest&hl=en
Open the app and switch on the GPS of your phone. Now open the menu in the app GPS Test. Select "Settings" tab. This takes you to the menu for the settings of the app. There you will find the two buttons.
Clear AGPS
Update AGPS
Press them now!
You have now successfully performed a reset of the A-GPS data and downloaded an actual version on your Samsung Galaxy S6. Your Samsung Galaxy S6 should now locate you within a very short time.
Best of luck
Thanks for help but there is no positive result ?
I did both commands + restart device.
Well I guess the GPS module is damaged.. but its very strange that it cleared the SensorHUB Test :/
lhrrob said:
Hi Members,
I'm searching for some info which can help me fix/repair my GPS functionality.
Cause: My S6 got little bit flooded. I brought it to service point in order to clean and dry it out. For sure there was SUB board replaced.
Problem: GPS is not working at all. Any application that require this functionality simply fails on GPS fix.
When an application starts, the little GPS bar icon blinks for 3 times and than just disappears.
Questions: Where is the GPS module/antenna located?
Is there a possibility to replace that module/antenna?
Or maybe it is integrated to motherboard?
Maybe service did some mistake like did not connect a wire or something...
Add on: All other radios are working correctly.
Firmware has been flashed (x2)
Any help will be appreciated.
Click to expand...
Click to collapse
My GPS is flawless. Factory reset and try GPS testing app. If that doesn't work then return phone.
Sent from my SM-G920F using Tapatalk
There is no option to return. Water damage = no warranty.
life_hacker said:
Well I guess the GPS module is damaged.. but its very strange that it cleared the SensorHUB Test :/
Click to expand...
Click to collapse
This is the reason why I still live in hope
Try this out. Stupid but worked for me
I got the same problem but after looking for 5 hours. I just ah what a hell. I removed my aluminium cover. Observe its cut out for the gps antenna and main antenna in the back. And voila. Gps test found 28 sattelites and locked right away. Then put the cover back on. NOTHING. So it seems some covers disturb the antennas. But i still feel its strange as the cut out in back. So perhaps it still disturbs it when something is next to it. Let me know if it worked for u too. To remove your cover. Best regards from sweden.

Amazfit Pace / Wifi problem on the phone

Hi everyone,
I have a problem with my watch "Amazfit Pace".
My phone is a Nexus 6P and I use the application "Amazfit Watch"
When I turn off the watch, the wifi on the phone become extremely slow.
The problem is fixed if I turn off the bluetooth on the phone (but I need the bluetooth for other devices, so that's not a solution).
Maybe the application is always searching for the watch and disturbe the wifi on the phone ?
I'm trying to find a solution with Amazfit support, but they tell me not to repeat the problem.
Thanks for your help.
Settings>Apps>Amazfit watch app>Change system settings off
Check there, I had problems with BT turning on all the time and I had to turn off there, so it turns on only when I open application.
"When I turn off the watch, the wifi on the phone become extremely slow."
i don't get it
the watch doesn't connect directly (through wifi) with the phone , the bt is for that
the watch connects (through wifi) with your router and need the wifi for the update only (i think)
are you sure that your router is "ok" ?
do you have the same problem on different wifi / router ?
Thank you for your response.
I know the watch connects in bluetooth.
But when the connection is not made (for example the watch is off or I don't have it with me), it is the wifi used by my phone that works very badly.
Everything goes back to normal if I turn off the Bluetooth or uninstall the Amazfit application.
I haven't been able to test with another router yet, but all my devices are working properly with it.
Did you tried to do what I wrote you? Try that, force stop Amazfit app and hope on the best.
droidhd said:
Did you tried to do what I wrote you? Try that, force stop Amazfit app and hope on the best.
Click to expand...
Click to collapse
Thanks for your help, but it doesn't work any better.
Because of a battery problem, Google has just changed my Nexus 6P by this one which is a reconditioned one, and I wonder if it doesn't have a problem.
What bothers me is that otherwise everything works perfectly.
I didn't test the watch with my old Nexus 6P, too bad, it went back to Google...
Yeah I got the same problem!
The amazfit app has a very aggressive policy for bluetooth pooling. The wifi/ble are places on a single chip in our phones and they're sharing the same rf antenna. That's why it probably slows down wifi.
I have a xiaomi phone btw.
i have the same problem, i write to amazfit support and repply : "you are the firts person with this problem".
i have problem with samsung a3 , a5 and S7
with others phone do not have problem at all
any ideas?
Thank you for your answers.
I am reassured to see that I am not the only one concerned.
I have submitted the problem to the Amazfit support.
Hi, is there any news about this problem? Cause i have a same thing, then I turning on an airplane mode on the wach Wi-Fi is going down...
Hi,
I am still in discussions with Amazfit support, no solution yet. I just sent them the app logs.
I think everyone who has the problem should report it to them, so maybe it will solve the problem more quickly.
Hello, I have exactly the same problem, any news from Huami?
Thank you very much
I am still in discussions with the support, but they don't find the solution.
I encourage everyone involved to bring the problem to their attention as well, that may help to solve the problem.
support.amazfit.com => Submit a request
You can quote my ticket number: 22185
I reported it directly to the development lead and team and we'll keep you posted on what we find. Thanks.
netzkobold said:
I reported it directly to the development lead and team and we'll keep you posted on what we find. Thanks.
Click to expand...
Click to collapse
this is what they just told me:
"Hello Joan,
Thank you for the reply. We are apologize for the trouble.
Our tech support have already looked into this issue, and they said there is no problem with the app. Could you please wait for the next update of the app to see if the issue can be solved? Thank you so much for your cooperation!
Should you have any further questions, please feel free to let us know. Cheers and have an excellent day!
Sincerely,
Seven | Amazfit Support"
Just had a month of banging my head over this strange behaviour. Even called ISP support to come check it, because sometimes it would even crash my router. Always at around 23h until about 7h the wifi would be like a crawl. Today I really took the matters into my hands and made some tests with network analyzers on the phone and so then began uninstalling apps from more recent to older. As soon as Amazfit watch app went away bang! everything began working, even a movie that had tried to start on chromecast and was stuck for more than 30min started playing out of nowhere.
Then tried to install it back again and issue started again even though it was disconnected from the phone. My first thought was that crazy chinese had put some creepy code at would start doing something creepy at night. Then I remembered that I had auto airplane mode from 23h to 7h! This is crazy! Airplane mode is useless this way.!
I'm going to open a ticket also. Not sure if this happens with every phone, mine is quite old. Sony Xperia Z3, could be only old chipsets, but could also be people just don't know whats going on and blame other things, because it is a really strange behaviour.
I just received a reply from Amazfit Support:
"Our developer team are working on this issue. Hope this will be optimized in the near future, but no dates have been set yet.
Could you please reset your router to 5G dual band to have a try? Thank you for your patience and understanding!"
So they are aware and trying to figure out what to do. I believe the workaround will work, because bluetooth is also 2,4Ghz and that might be the issue, but have to try later at home.
Wifi problems
Same problem here. WIFI on smartphone goes down when watch is disconnected (airplane mode, turned off, away from phone, etc). Reported to amazfit support. Big bug!
Bad news from Amazfit support, they blame the phone, and their only solution is "try on another phone":
Seven (Amazfit)
Nov 21, 01:18 PST
Hello there,
Thank you for your email. We are very sorry about the inconvenience.
Our developer team argued that such issue maybe caused by certain mobile phones. Could you please try another phone to have a try? Thank you for your understanding!
Should you have any further questions, please feel free to let us know. Thank you and have a nice day!
Sincerely,
Seven | Amazfit Support
I've got the same issue and just wrote a ticket through the app with screenshots from a speedtest app.
i've got an oneplus 3t with android 8.0.0
Wifi speed usually is 50 Mbit/s. If the watch is disconnected it goes down to about 5 Mbit/s. I can reproduce this behavior everytime I want to, so it's caused by the app.

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