Learn how to use dual SIM on Android effectively, choose lines, manage mobile data, control calls and texts, and fix common setup issues on any phone.

Needless to say, a “mobile network not available” message — or some alternative version of it — is a major problem on a smartphone, since the whole point is to make calls and access the internet away ...

SIM card errors in mobile devices may be attributed to software glitches or hardware damage. In most case, such error occurs among other random system issues ...

Gently cleaning the SIM card and its tray can remove dust or debris that might be obstructing proper contact. Switching Airplane mode on and off can help reset network connections and prompt the ...