all of a sudden no service

So many lies wrote:

ITS TMAYBE TERRIBLE HORRIBLE LYING ABOUT THE COVERAGE THEY HAVE. I HAVE BRAND NEW S22 ultra from TMAYBE. only time it works is if it's hooked up to Wi-Fi. And guess what TMAYBE DID ABOUT IT…NOTHING!  Stuck for 24months with no cellphone data that works. And you wonder why there's so many horror stories about TMAYBE.

While I may agree with you on the coverage… Red Triangle is not a ‘no coverage’ issue but more of an Android issue

FAQ: Why Got Android With Red Triangle

Before delving into the solutions, we should understand the reasons that have caused the issue in the first place. This issue occurs when you're trying either to boot up your Android phone as usual or to enter into the Recovery Mode. The potential reasons for this issue could be:

• Minor glitch in the OS
• System issue that demands OS repairing
• Any third-party app might have interrupted the boot sequence
• Malware or bug in the Cache partition