I just bought tab s7+ wifi (T970). While i was trying to insert microsd card into the tray i realized it also has space to insert sim card in it. First i thought it might just be it so that Samsung doesn't have to make another tray for wifi models. Then i saw sim connectors inside the slot. I tried searching it online,what other people had to say. Most of the people said that there is no modem for it,some said it might be a software limitation. As far as i know the snapdragon 865+ has an inbuilt 4g modem.If there is no modem in it, then why add connectors for it on the first place.
It would be great if anyone with a rooted device can try flashing firmware from carrier,or just check if it was possible to get sim working.
My T870 has the same thing. Instead of producing two different trays, Samsung put a blank where the SIM would go on the WiFi only models (T870 and T970). Just because you can pull that blank out and insert a SIM card doesn't mean it will work in your T970.
You can try of course, but it won't work. Nor will it likely hurt anything.
Yes, the Snapdragon 865+ has a built in 4G modem, but unless it is enabled in the firmware, it won't work. By firmware, I am not talking ROM/OS level. I am talking chip level firmware.
And even then I'd assume there are no 4g antennas in the WiFi model!
This has been discussed before.
The SIM tray is simply plugged with a blank on WiFi only units.
The SIM/SD Card slot is there (most likely to keep parts and manufacturing costs down), but it lacks a 4G modem and does not have any cell antennas.
Related
I noticed that the SIM cards keep changing every so often.
The new SIM cards have a smaller gold-metal surface area, whereas the older ones have a bigger gold-metal surface area.
Any ideas why?
Is there any benefit to swap out your SIM card to the newest? The SIM that comes in the box has a smaller gold-surface area.
(When was using previously using the iphone, my SIM was pretty beat up from switching phones all the time and the gold-metal part practically had indentations, which did give me reception problems. When I swapped it out with a new one at the store it did fix the problem. Obviously a surface contact problem.)
* Picture attached below *
iunlock said:
I noticed that the SIM cards keep changing every so often.
The new SIM cards have a smaller gold-metal surface area, whereas the older ones have a bigger gold-metal surface area.
Any ideas why?
Is there any benefit to swap out your SIM card to the newest? The SIM that comes in the box has a smaller gold-surface area.
(When was using previously using the iphone, my SIM was pretty beat up from switching phones all the time and the gold-metal part practically had indentations, which did give me reception problems. When I swapped it out with a new one at the store it did fix the problem. Obviously a surface contact problem.)
* Picture attached below *
Click to expand...
Click to collapse
Here's the pic.
I did have a weird situation where replacing the sim actually somehow increased my data speeds...the old sim was only a year old ...but i ain't complaining
didn't really notice any less surface area tho
newspeak said:
I did have a weird situation where replacing the sim actually somehow increased my data speeds...the old sim was only a year old ...but i ain't complaining
didn't really notice any less surface area tho
Click to expand...
Click to collapse
That's interesting....hmmm....now I'm really curious haha...
I swapped out my 1 year old SIM as well and now im getting 3G signals in my house whereas my old sim would drop 3G service more often.
Idk I change sim cards for all my phones since g1 since there's nothing on it ever since using google contacts
Sent from my SGH-T959 using XDA App
There is typically no need to replace your sim card unless you are having problems with it (ie not registering on the network.)
However older sim cards have a restriction on how many times they can register on the network, and after they hit the limit the phone will stop connecting, so if you want to prevent this issue (usually takes a couple years, and is a lot more likely in areas where your signal drops, for people who travel a lot, and in 3G coverages areas where you swap back and forth between 3G and 2G) you can use one of the newer sim cards. To Identify whether your sim is the newer variant with no registration restriction look at the back where the gold contacts are, if its a newer sim it will say in small lettering "TMXXXX" (where X is a number, ie TM4322) and it will also have an expiration date printed (it must be activated by this date or it becomes unusable.)
In terms of 2G/3G the sim card itself and its age should not make a difference as the capability to connect to those networks is dependent on the phone, not the sim. You can think of a sim card as a gateway that connects your phone to the billing system and authenticates it.
Having had said that, if you are having connection issues it could just be a defective sim card, to check, just place the sim in a phone that isn't having any connectivity problems, if it starts having problems, replace your sim.
In terms of the digit you highlighted in that picture, I believe it has to do with the manufacture year, although if I remember correctly its digits 4 and 5 that make up that information, but otherwise isn't anything important to a consumer.
well i got curious and checked ....i have the bigger sim ...i don't think the numbers matter much
Aphotix said:
There is typically no need to replace your sim card unless you are having problems with it (ie not registering on the network.)
However older sim cards have a restriction on how many times they can register on the network, and after they hit the limit the phone will stop connecting, so if you want to prevent this issue (usually takes a couple years, and is a lot more likely in areas where your signal drops, for people who travel a lot, and in 3G coverages areas where you swap back and forth between 3G and 2G) you can use one of the newer sim cards. To Identify whether your sim is the newer variant with no registration restriction look at the back where the gold contacts are, if its a newer sim it will say in small lettering "TMXXXX" (where X is a number, ie TM4322) and it will also have an expiration date printed (it must be activated by this date or it becomes unusable.)
In terms of 2G/3G the sim card itself and its age should not make a difference as the capability to connect to those networks is dependent on the phone, not the sim. You can think of a sim card as a gateway that connects your phone to the billing system and authenticates it.
Having had said that, if you are having connection issues it could just be a defective sim card, to check, just place the sim in a phone that isn't having any connectivity problems, if it starts having problems, replace your sim.
In terms of the digit you highlighted in that picture, I believe it has to do with the manufacture year, although if I remember correctly its digits 4 and 5 that make up that information, but otherwise isn't anything important to a consumer.
Click to expand...
Click to collapse
Thanks for your input.
As for the exp. date, where is that located. I don't see it.
Aphotix said:
In terms of 2G/3G the sim card itself and its age should not make a difference as the capability to connect to those networks is dependent on the phone, not the sim. You can think of a sim card as a gateway that connects your phone to the billing system and authenticates it.
Click to expand...
Click to collapse
That's what I thought...until a lot of people started noticing better 3g connection/speeds with the new sim cards. Just a placebo effect perhaps?
The size difference could also be for users who want to make it a micro sim so they can put it in their unlocked iPhones. I don't have either of these sim cards to compare, so I'm not sure.
hmm.. the sim im using is almost 8 years old. its been moved from phone to phone so many times there are wear marks on the contacts. still works fine though.
When I first got my g1 a few years ago I had issues with the market. There were apps that I knew were available (private apps) but I could not download them. I went to a T-Mobile store and looked at the display phones. One of them was able to see private apps, the other like mine, could not. I talked it over with the rep and we decided to replace the sim card. It was a random, no other ideas, decision. Started the G1 back up and Market was now working as expected. There were no other benefits noticed. Since then, I tend to replace the sim anytime a new phone is purchased.
Your milage may vary.
-Ryan
Sent from my SGH-T959 using XDA App
When I got my Vibrant, coming from the g1, tmo wanted to just pop it in the Vibrant. I made them put in the new sim card just to be safe, figured the one that came in the box brand new SHOULD be better.
iunlock said:
Thanks for your input.
As for the exp. date, where is that located. I don't see it.
Click to expand...
Click to collapse
Its only on the newer ones, the old ones don't expire, they just stop working after a set number of registrations on the network.
In regards to sim issues, they really shouldn't have any impact at all. Changing a sim card refreshes the billing information in the system (like what kind of services your phone is supposed to have and what not) customer care can do this without the need for a new sim.
Hoenstly though, sometimes a sim replacement is needed, I've seen stranger things.
s15274n said:
When I got my Vibrant, coming from the g1, tmo wanted to just pop it in the Vibrant. I made them put in the new sim card just to be safe, figured the one that came in the box brand new SHOULD be better.
Click to expand...
Click to collapse
When I bought my phone out right, the rep opened the box and took out the SIM then sold me the phone.
I guess it doesn't matter since swapping out your SIM at the T-Mobile corporate stores is free.
I just tried this since there is a tmobile store across from where I work. I used SpeedTest app and ran it 3 times before the swap. Average was about 2500 kbps download and 300 up. I swapped the sim out, went back to the spot where I originally tested and ran three more times and got about the same rate with the new sim. My old one was about 3 yo from when I had my Dash.
MonkySlap said:
I just tried this since there is a tmobile store across from where I work. I used SpeedTest app and ran it 3 times before the swap. Average was about 2500 kbps download and 300 up. I swapped the sim out, went back to the spot where I originally tested and ran three more times and got about the same rate with the new sim. My old one was about 3 yo from when I had my Dash.
Click to expand...
Click to collapse
I'm thinking the only time one would see a difference is if they are having poor contact surface from the SIM wearing out. I've seen ooolld SIM's where the metal had indentations like no other.
Just read the thread and said why not had the same sim card since I first signed up with tmobile 5 years ago.
When I talked with the rep on the phone and explained this to him and asked could this help he stated that the official tmobile policy is if the old sim card works no need to switch. However, because of the technical specs on the card could cause better reception, they just can't guarantee it, they only guarantee it will not get worse. He asked if I was having issues and I said no i'm just a nerd and wanted to know if it would help. Just swapped it out going to give it a test around the house and will report back.
Back Story:
Upgraded from G1, perfect 3G everywhere in chicago, couldn't even get it to drop from 3G no matter where I went. With the Vibrant and and old sim card, constantly dropped to 2G no big deal still was speedy
New Sim Card:
will report after testing
Old Sim Card
My connection constantly jumped from 2G to 3G all over my house constantly
New Sim Card
Solid 3G all through the house, will report back after tomorrow when I travel all over chicago
Hello Friends,
My Razr is not able to detect SIM Cards. I have tried more than 3 operators microSIM but it does not show any network. If I do a manual scan, it gives me a list of operators, but selecting the same does not work. It is stock running on 2.3.6. Any solution to this?
Thanks,
Anish
I have the same problem with the RAZR in India and I am using an Idea SIM. Any solution?
Maybe the SIM module is spoilt. Try taking it to a service center.
Hello!
I had the same issue. Razr refused to read the Idea SIM, tried many SIMs & found that plastic card of the Idea SIM is slightly less thicker than others. After bending the SIM little, it worked. See the image for better illustration:
Are you sure, also the card works on other devices. But I will still try getting a new one.
Yes, my Idea SIM worked in all other devices except Razr before applying the trick.
Razr has space limitation due to which phone's SIM connectors are not so flexible than other devices. A little less thickness preventing the phone to connect & read the SIM data. Also, like other devices, it lacks the SIM holder or clip.
DiabolicBoy said:
Are you sure, also the card works on other devices. But I will still try getting a new one.
Click to expand...
Click to collapse
Hey all,
Through a combination of misfortune and greed, I ended with a possible clone Galaxy S3 last night. I think it could be a clone, as the About Phone options are not complete (No Hardware/CPU info) and lack of Samsung Apps.
Also, the internal memory is less than 1GB.
Externally, the phone looks real, including the identification sticker at the back. Internally, there are some issues.
The phone is only connecting to 2G networks on Edge or Gprs, even though the SIM will connect to 3G or HSPA on another handset (means the SIM is correctly working on 3G).
In addition, there boot logo also splashes Android logo between Samsung, unlike normal S3.
Unlike my work mate's S3, which I compared it against, the SIM card and MicroSD card slots are located towards the top of the battery. Whereas my colleague's SIM card and MicroSD card slots are located towards the bottom. My phone takes a normal SIM, whereas my colleague's phone takes a Micro SIM.
I believe I have ended up with a clone. What is the best I could do with it (technical suggestions) ? I did not buy it to use, as I have another working handset with me.
bym007 said:
Hey all,
Through a combination of misfortune and greed, I ended with a possible clone Galaxy S3 last night. I think it could be a clone, as the About Phone options are not complete (No Hardware/CPU info) and lack of Samsung Apps.
Also, the internal memory is less than 1GB.
Externally, the phone looks real, including the identification sticker at the back. Internally, there are some issues.
The phone is only connecting to 2G networks on Edge or Gprs, even though the SIM will connect to 3G or HSPA on another handset (means the SIM is correctly working on 3G).
In addition, there boot logo also splashes Android logo between Samsung, unlike normal S3.
Unlike my work mate's S3, which I compared it against, the SIM card and MicroSD card slots are located towards the top of the battery. Whereas my colleague's SIM card and MicroSD card slots are located towards the bottom. My phone takes a normal SIM, whereas my colleague's phone takes a Micro SIM.
I believe I have ended up with a clone. What is the best I could do with it (technical suggestions) ? I did not buy it to use, as I have another working handset with me.
Click to expand...
Click to collapse
You won't get any support here as you don't have the genuine S3. What you can do is sell that one to buy a genuine S3 or find a forum that supports that clone.
Here you won't get any so tough luck for you. You should've been more careful on buying such devices.
Can you kindly confirm if this is indeed a clone, as I am unsure myself.
bym007 said:
Can you kindly confirm if this is indeed a clone, as I am unsure myself.
Click to expand...
Click to collapse
Then post some picture of it.
bym007 said:
Hey all,
Through a combination of misfortune and greed, I ended with a possible clone Galaxy S3 last night. I think it could be a clone, as the About Phone options are not complete (No Hardware/CPU info) and lack of Samsung Apps.
Also, the internal memory is less than 1GB.
Not Samsung SGS3
In addition, there boot logo also splashes Android logo between Samsung, unlike normal S3.
Not Samsung SGS3
Unlike my work mate's S3, which I compared it against, the SIM card and MicroSD card slots are located towards the top of the battery. Whereas my colleague's SIM card and MicroSD card slots are located towards the bottom. My phone takes a normal SIM, whereas my colleague's phone takes a Micro SIM.
Not Samsung SGS3
Throw it away waste of time trying to do anything web is littered with identical posts .
jje
Click to expand...
Click to collapse
Wow.. Lots of clone S3 threads here ...
Phone: Galaxy S III - Pebble blue
Rom: Stock 4.1.2 XXEMC2 - XXEMD2
bym007 said:
Hey all,
Through a combination of misfortune and greed, I ended with a possible clone Galaxy S3 last night. I think it could be a clone, as the About Phone options are not complete (No Hardware/CPU info) and lack of Samsung Apps.
Also, the internal memory is less than 1GB.
Externally, the phone looks real, including the identification sticker at the back. Internally, there are some issues.
The phone is only connecting to 2G networks on Edge or Gprs, even though the SIM will connect to 3G or HSPA on another handset (means the SIM is correctly working on 3G).
In addition, there boot logo also splashes Android logo between Samsung, unlike normal S3.
Unlike my work mate's S3, which I compared it against, the SIM card and MicroSD card slots are located towards the top of the battery. Whereas my colleague's SIM card and MicroSD card slots are located towards the bottom. My phone takes a normal SIM, whereas my colleague's phone takes a Micro SIM.
I believe I have ended up with a clone. What is the best I could do with it (technical suggestions) ? I did not buy it to use, as I have another working handset with me.
Click to expand...
Click to collapse
try the LCD test *#0*#
it should be working if you are on stock rom..
bong0x00 said:
try the LCD test *#0*#
it should be working if you are on stock rom..
Click to expand...
Click to collapse
Sorry it does not respond to the code, meaning it is a clone.
yeah.. if it was on stock rom.. check the android version if 4.1.9 and if it is, it was a clone
The android version is 4.0.3
bym007 said:
Unlike my work mate's S3, which I compared it against, the SIM card and MicroSD card slots are located towards the top of the battery. Whereas my colleague's SIM card and MicroSD card slots are located towards the bottom. My phone takes a normal SIM, whereas my colleague's phone takes a Micro SIM.
Click to expand...
Click to collapse
The 'minor' hardware differences are the clincher, it's very difficult to exactly replicate both form and function when reverse engineering. Some clones can look very similar from the outside but take the back off and it becomes clear that they are working from a limited bin of parts to get something that will even switch on.
bym007 said:
The android version is 4.0.3
Click to expand...
Click to collapse
lel2asaf your phone is a clone :/ Try checking the paper under the phone battery , or download a game to check its performance
Your phone is a copycat. Sorry.
Does anyone think there's a chance this tablet has a modem in to that can be enabled by porting over parts of a dump from one of the cellular versions? Long shot but not use to wifi tablets even having the pins for sim card.
i don't think so, if it has been designed to be working without a sim, there's a reason for it. the only way would be to replace the entire motherboard with the t975/t976 version, so you might as well buy the sim version.
kitamurt said:
i don't think so, if it has been designed to be working without a sim, there's a reason for it. the only way would be to replace the entire motherboard with the t975/t976 version, so you might as well buy the sim version.
Click to expand...
Click to collapse
Oh I get it, this is just the first wifi only tablet I've had, that HAS the pins for a sim card, I'm not taking it apart, but since it has a 865+ it would be insanely easy if there's a teardown to tell if it has the hardware, since the modem is now a separate chip with this snapdragon, granted you would need to decan the motherboard to do so,
Samsung used the same SIM/SD Card combo tray for all S7/S7 + models.
You'll notice the filler piece on the opposite side of the SD Card side is shaped like a Nano SIM..
The filler is removable and is marked under the black sticker as a SIM slot.
That said, I doubt Samsung is going to include the radio package in a disabled state on a Wi-Fi only model.
The one teardown video I could find of a Wi-Fi only model S7 did not show any cellular radio antennas. I can only see Wi-Fi leads. Definitely do not see any 5G antennas.
To keep it short and sweet, I realised when you take the SD card slot, under the plastic cover there is a sim card slot. Theoretically, if I was to flash the tab s7+ 5G firmware and put the sim card in would it work?
OMJOfficial said:
To keep it short and sweet, I realised when you take the SD card slot, under the plastic cover there is a sim card slot. Theoretically, if I was to flash the tab s7+ 5G firmware and put the sim card in would it work?
Click to expand...
Click to collapse
Probably not. For two reasons:
a) The WiFi only version won't have the 5G antennas needed.
b) The 5G radios would have to be turned on at the chip level; meaning Qualcomm would have to do it. The radios are enabled/disabled at the factory (meaning Qualcomm), not by the device OEM.