4. Check if a software update is available for your phone.
5. Reset the phone.
Consistent busy signal
Outbound calls
1. If you hear a fast busy signal when you call a number, all cellular circuits may be in use, preventing the
call from going through. Try calling again later.
2. If you hear a fast busy signal every time you call the same number, your number may be blocked by an
app. Try calling from a different number.
Incoming calls
If you have a signal and can make calls, but callers tell you they consistently get a busy signal when calling
you, check that you haven’t blocked their numbers.
Fix issues : Call and SIM issues 324