Why can't the mobile phone receive text messages? My mobile phone is Sony Ericsson U20I, and I can't get any messages.

1, your mobile phone card is in arrears.

2. Maybe you sent some short messages before, which caused the short message function to be closed by the operator. You can call the operator's toll-free customer service number to find a manual customer service, ask them to take a look at it for you, and just reopen the SMS function.

3. If the reason of 1 2 is excluded, it is the mobile phone. For example, the contact between SIM card and mobile phone is poor. Take out the SIM card, blow the dust and plug it in again.

I hope it works for you.