problems with unlocked Metropcs phone

[kong65]

I have a lg stylus that I took in to Metrics and had them unlock it so a friend could use it on straight talk. Put her sim card in. She can send/receive calls and texts but can't get in internet or use any other data. 4g doesn't show on status bar. What could be the issue?

 

[Spec2nirvash]

Straight talk GSM runs on AT&T's network. You can't use Internet or send MMS messages until you delete MetroPCS APN settings from the phone and program ATT/Straight talk APN settings to the phone. Since it's a MetroPCS phone, their APN settings are going to stick there until you input new ones!
Straight Talk should have instructions listed on their web site under support/FAQ.