[babyglo]

I just recently bought a second hand tablet and now it is showing unfortunately the process com.Android. Phone has stopped. everytime everytime I try to push ok it will not let me do anythingit's stuck

[B. Diddy]

Welcome to Android Central! What brand and model tablet is it? See if you can turn on Airplane Mode. You can often access that by pressing and holding the Power button until the power menu appears.

[Kamu2000]

Hi. Same message is showing up in my smartphone Lenovo S820. I just updated it to OS Kit Kat and as soon as i did and i was asked for the SIM's PIN's it started showing that message and looping on it, no matter what i do. Besides that, the SIM doesn't get recognised and therefore i can't make any calls. I tried to make the factory Reset but it came back to the same. After i put it on Airplane mode it stops but it still doesn't recognises the SIM's. Please help me, what can i do?