Without valid IMEI, 4G/calling will not work.
You should consider flashing this firmware if you encounter: nokia ta-1174 spd flash file pac
Nokia TA-1174 is a feature phone that was released in 2018. It comes with a 2.4-inch display, 2MP rear camera, and a 1020mAh battery. The device supports dual-SIM, Bluetooth, and FM radio. Although it's a basic phone, it still requires periodic software updates to ensure optimal performance. Without valid IMEI, 4G/calling will not work