Tutor
•
4 Messages
iPhone 4S data not working on AT&T
I have a iPhone 4S that I cannot send picture messages or data on. It's extremely complex, and I can't figure it out. The sim card is a family mobile/t-mobile sim card on AT&T. It says I have 4G, but I get a PDP authentication error every time I use any app that requires data.
Cellular Networks enabled [✓]
4G Enabled [✓]
Network: AT&T
Carrier: T-Mobile 24.1
ios: 9.3.5
The only thing preset in my APN settings is under internet, it says: "APN: Alpha"
formerlyknownas
ACE - Sage
•
111K Messages
7 years ago
What plan do you have?
0
0
David606
Employee
•
3.5K Messages
7 years ago
Carrier settings needs updated. If this is an MVNO carrier then it does not use the AT&T APN settings.
0
0
kazuto
Tutor
•
4 Messages
7 years ago
0
0
formerlyknownas
ACE - Sage
•
111K Messages
7 years ago
ATT network, but T mobile SIM card. It wouldn't work. Needs an ATT sim and plan for ATT, or the same for T-mobile.
0
0
kazuto
Tutor
•
4 Messages
7 years ago
@lizdance40 The sim card is from Wal-mart's Family Mobile, which is powered by T-mobile, bring your own phone sim kit. It's the AT&T sim card from it, and the service is on AT&T. I get data on my Galaxy S5 just fine, but I am wanting to sell that phone and use the iPhone 4S I have.
0
0
formerlyknownas
ACE - Sage
•
111K Messages
7 years ago
The 5s is an LTE device. The 4 S is a 3G device. To swap your service from the Samsung to the iPhone, you need a new SIM card from ATT for a 3G device. An LTE sim won't work in a 3G phone,,and visa versa.
The T-mobile card from Walmart is of no use on AT&T, I don't even know why we are talking about it.
If the 4S is locked to another network, it won't work on AT&T.
0
0
kazuto
Tutor
•
4 Messages
7 years ago
With the same sim card, I used to get data at my old home. It was 4G as well. I just don't get data on it where I live now.
0
0