My Android tablet has a ? where the Wi-Fi symbol typically is.

[Android Central Question]

My Android tablet has a ? where the Wi-Fi symbol typically is and it says no sim card It worked fine yesterday but now it won't let me log onto anything.

 

[Android Central Question]

My Android tablet has a ? where the Wi-Fi symbol typically is and it says no sim card It worked fine yesterday but now it won't let me log onto anything.