Why other SIM cards are locking my home screen?
How to unlock E E T-mobile sim card from my imei or serial number?
After insert another sim card, the screen are locking and comming text below.
Simcard is invalid .
The SIM card inserted into this iPhone that belongs to a mobile operator that is not supported in accordance with the current policy on the activation server. The issue is not related to iPhone hardware. Insert another SIM card owned by a supported mobile operator, or request it to unlock this iPhone. For more information, contact Apple.