Database Develop

3G SIM card

I had an MDA Compact 3 (2.5G phone I believe).
I have upgraded to the MDA Compact 4.
However, T-Mobile did not sent ne a new SIM.
Surely my original SIM is 2G and the new phone is 3G.
Should I not have been sent a 3G SIM too?
Or are all T-Mobile SIMS 2G and 3G enabled?

tmohammad said:
I had an MDA Compact 3 (2.5G phone I believe).
I have upgraded to the MDA Compact 4.
However, T-Mobile did not sent ne a new SIM.
Surely my original SIM is 2G and the new phone is 3G.
Should I not have been sent a 3G SIM too?
Or are all T-Mobile SIMS 2G and 3G enabled?
Click to expand...
Click to collapse
T-Mobile shuld be Edge

My T-Mobile UK Sim Card was supplied when I got my MDA Vario 2 years ago. The phone was 2G only but my SIM card is 3G. I have read elsewhere that T-Mobile only supply 3G SIM Cards - regardless of what phone you get from them. HSDPA works great.
If only Orange did the same. They only supply 3G SIMs with 3G phones. I'm stuck with a 2G SIM that I never use.

It depends on your country. Here all operators are UMTS, so also T-Mobile. They can block UMTS on your sim-card (but can remotely enable it for you), but there's no difference here between a 2G and 3G card in a physical way.
Edge doesn't even exist here anymore, that's soo 1999

it all depends on how old the sim card is, i had a very old O2 simcard and that was not able to run 3G (the card was too old) BUT all newer simcards can run both 2G and 3G (depending on the service coverage)

akito said:
It depends on your country. Here all operators are UMTS, so also T-Mobile. They can block UMTS on your sim-card (but can remotely enable it for you), but there's no difference here between a 2G and 3G card in a physical way.
Edge doesn't even exist here anymore, that's soo 1999
Click to expand...
Click to collapse
My understanding is that here are 2 different types of SIM Cards - A SIM (2G) and USIM (3G). 3G will not work on a SIM card - you must have a USIM card. The SIM cards are very different - not in looks, but in the chip.
T-Mobile UK issue USIM cards for all phones, and these will work on 3G.
Orange UK issue SIM cards for 2G phones and these need to be replaced to work on 3G (but try asking for one from Orange and it confuses them to death).
If you do not have a USIM you will not get 3G. The network cannot remotely enable it if you have a plain old 2G SIM card.
I got some free Orange and O2 PAYG SIM cards a couple of months ago and none of them were USIM and would not work on 3G. I think that it why there are so many free PAYG SIM offers at the moment - the networks are trying to offload old stock so they can start issuing everyone with USIMs.

Thanks to all...
I got my SIM card from t-mobile in jan 2007, so I guess its 3G??
Fot the data connection I get a G sometimes and sometimes H on screen but the manual says 3G should be displayed.
On my sons nokia on the three network, i can see 3.5G on the display. That is whats confusing me... i dont see 3G!

H is HSDPA - high speed 3G (3.5G). T-Mobile are/have upgraded their network to HSDPA in the UK, so you won't see 3G symbol on your phone.

[Q] P7 Dual Sim Version

I had 2 versions of P7 , The First is P7-L10 middle east version single sim and the second one is P7-L00 Chinese version dual sim , I was really impressed by the single sim one then i decided to buy the dual sim one.
The 2 bugs i found till now in the Chinese version are the following :
The front camera brightness option in dark area is not working despite that the option is on , in the P7-L10 if u take selfie in dark area the screen flashs white background to brightness the photo but in the P7-L00 this feature is not working at all even the option is on also the image editor is totally different between the two versions ,though i bought P7 for the front camera .
There is no option for the dual sim in networks to choose( wcdma only) or 3g network only , while i bought the dual sim to make sim for voice calls and the other for data .
Anyone had any idea or solution about the above-mentioned ?

SIM 1: Micro-SIM (4G, 3G, 2G)
SIM 2: Nano-SIM (2G) or Micro-SD
Is your voice-SIM the nano-SIM?

Tippfehler said:
SIM 1: Micro-SIM (4G, 3G, 2G)
SIM 2: Nano-SIM (2G) or Micro-SD
Is your voice-SIM the nano-SIM?
Click to expand...
Click to collapse
Yes exactly but there is no option in sim 1 for wscdma only , the option are 4g/3g/2g auto or 2g only, this make data on edge network most of time, I want to force it to wscdma only as any mobile!!!

ahmad_nece said:
I want to force it to wscdma only as any mobile!!!
Click to expand...
Click to collapse
You can try the free app "3G Data Only!", but i think there is no wcdma available.
https://play.google.com/store/apps/details?id=com.mobnetic.only3G&hl=en

tippfehler said:
you can try the free app "3g data only!", but i think there is no wcdma available.
https://play.google.com/store/apps/details?id=com.mobnetic.only3g&hl=en
Click to expand...
Click to collapse
4g = lte
3g = wcdma/hspa/hspa+
2g = gprs

Tippfehler said:
You can try the free app "3G Data Only!", but i think there is no wcdma available.
https://play.google.com/store/apps/details?id=com.mobnetic.only3G&hl=en
Click to expand...
Click to collapse
Thanks for your support but unfortunately it doesn't work still sim 1 give gprs signal even the application is active

Have you pushed the widget to disable 2G?

Yes sure I push it and enable it but it still work on edge or gprs network

If I enable 3G only, then I have no data, if 3G is not available.

[Q] Do both sim card slots support US 4G (LTE) ? T-Mobile.

Hi guys. My Mix is 6GB\256GB Pro version.
I am running Dev rom 7.3.2 (I am trying to unlock).
My Issue is I recently started to use both sim slots but for whatever reason
SIM #2 always shows as running as 3G.
I am unsure whether or not both these slots support 4G and any guidance would be appreciated.
Thanks.

I have my sim in slot 2 and have 4G LTE [US - SC] on T-Mobile, I haven't populated the first sim slot.

Thanks for the input

I have T-Mobile in 1 and verizon in 2, both working under 4G. However, I'm having issue with volte...

network problems

Hi,
i rebrand my P9 eva-l19C900 to c432 with success and i upgraded my android's version .. but i still have a problem with my network when i activate the 4g on one sim after twice minutes the second lose the signal and become deactived.

wakasensei said:
Hi,
i rebrand my P9 eva-l19C900 to c432 with success and i upgraded my android's version .. but i still have a problem with my network when i activate the 4g on one sim after twice minutes the second lose the signal and become deactived.
Click to expand...
Click to collapse
In Settings / Wireless & Networks / Dual SIM, see that only one SIM (you can choose which) can be 3G/4G
Hence one SIM will be on 3G or 4G, second SIM must be on 2G - but if your operator for that second SIM does not provide 2G you will not be able to use that SIM
In Settings / Wireless & Networks you can disable 4G and in Preferred Network type you can force GSM (2G) only - that way you can test which of the two SIM cards / operators provide/have 2G signal

zgfg said:
In Settings / Wireless & Networks / Dual SIM, see that only one SIM (you can choose which) can be 3G/4G
Hence one SIM will be on 3G or 4G, second SIM must be on 2G - but if your operator for that second SIM does not provide 2G you will not be able to use that SIM
In Settings / Wireless & Networks you can disable 4G and in Preferred Network type you can force GSM (2G) only - that way you can test which of the two SIM cards / operators provide/have 2G signal
Click to expand...
Click to collapse
Thanx bro...
But i didn't fond the way To force the second sim To 2g only.. can you help me plz?

wakasensei said:
Thanx bro...
But i didn't fond the way To force the second sim To 2g only.. can you help me plz?
Click to expand...
Click to collapse
In Dual SIM Settings you choose one which is 4G, the other will be 2G/3G
Cannot help you more, I have both SIMs 2G/3G/4G, hence no matter how I set, both work
Try playing yourself, test both SIMs one by one only, in one and the other slot, with various settings (4G enabled/disabled, Pref net 4G, 3G, 2G only)
Maybe you have problem with one of the SIM cards or one slot

Question SIM Problem after FRP Unlock G998U

Hi all,
I've just purchased a Verizon G998U with cracked front screen and back and found that the phone is google locked - FRP Locked. According to the seller, it was Verizon unlocked prior to the sale. Tested the phone with my local Malaysian SIM Card and I was getting signal from it prior to getting the screen replaced and FRP unlocked.
I have managed to get the FRP Lock removed and a factory reset later allows me to setup the phone properly with my own Google Account but when i'm putting in my Malaysian Sim Card, it says that this is not a Verizon sim card.
Any ideas on why this is happening? Will an sim unlocked phone be reverted back to a locked phone after FRP lock is removed?
Thanks in advance

Ask the seller for the unlock code used before

Noted miravision, what do i do with the unlock code then? Putting in my Malaysian sim card and rebooting the phone does not ask for any unlock code.

Depending on whether the seller used an official unlock authorized by Verizon or used unofficial means, your seller should help you further in good faith

Noted with thanks, miravision. I will check with the seller and will update once i get a feedback from them

Update on the testing done to the phone. Didn't managed to get anything from the seller. But did some interesting testing with the phone. I've got 2 sim cards with two different provider in Malaysia - Celcom and Yes.
Flashed the phone with the U1 XAA software and managed to setup the phone with Yes sim card with VoLTE running and Internet working. As for Celcom SIM card, no signal at all and tried playing around with Samsung Band Selection App, managed to get the sim to connect intermittently with VoLTE and Internet working. Removal of sim and reboot of the phone will sometime changes the Celcom SIM to no signal at all and manual searching of the Celcom network also doesn't show the selectable network and only shows Yes 4G network.​
So from the testing above, can i presume that the phone is sim unlocked? If it's unlocked, why can't the other sim from Celcom can't be detected consistently?
Anyway, the telco info is as below
YES - LTE Band 20 (800 Mhz), Band 38 (2600 Mhz), Band 40 (2300 Mhz),
VoLTE Support
Celcom - LTE Band 1 (2100 Mhz), Band 3 (1800 Mhz) , Band 7 (2700 Mhz) - VoLTE Support.
Hopefully can get some insights on what is actually going on.
Thanks in advance