Look for legacy pages that haven’t been updated since 2015 – those are often the correct ones. Alternatively, use offline calculators available in the "ZTE Mobile Unlock Tool" software bundle (older versions only).
In the world of mobile phones, few things are as frustrating as being "locked" to a single carrier. If you own a (often branded simply as the ZTE SFR 101 or ZTE Star Addict in France), you know this limitation well. This affordable, rugged device—popular for its simplicity and long battery life—was primarily distributed by the French operator SFR. But what happens when you want to switch to Orange, Bouygues, or use a prepaid SIM card while traveling? Zte Sfr 101 Unlock Code Calculator
These sites ask for your IMEI, "calculate" for 30 seconds, and then demand payment ($10–$30) to "reveal" the code. They are pretending to be free calculators. In reality, they are just collecting IMEIs and charging you for a code they either get from a real free calculator or purchase from a wholesaler for $1. A true calculator gives the code instantly for free. Look for legacy pages that haven’t been updated