General Questions
- What does INVALID SIM or SIM NOT SUPPORTED mean?
- How do I check to see if my phone’s software needs to be updated?
- iPhone Text Message Troubleshooting
- iMessage and/or FaceTime are not working, what can I do?
- I have unlimited text but my iPhone says it can't text without data?
- Which apps are using all my cellular data?
- How do I remove my iPhone pass code?
- Why is tethering not working on my phone?
- Why is hotspot or WiFi tether not working on my phone?
- I forgot my Twigby password. How can I access my account?
- 411 (directory assistance) information calls
- My phone didn’t activate… What do I do?
- My phone won't power on. What should I do?
- How do I activate a Windows phone?
- If I have a 3G phone, can I access the 4G network?