The International Mobile Equipment Identity (IMEI) is a 15-digit serial number unique to every mobile device. Think of it as a fingerprint. Networks use it to identify legitimate devices, block stolen phones, and prevent cloning.
You might find a second-hand Nokia X1-01 from a shady dealer with a "clean IMEI" (i.e., a stolen one that hasn't been reported yet). Even then, modern carrier networks run "IMEI checks" when you connect to 4G/5G bands. Although the X1-01 is 2G-only (GSM 900/1800), carriers are shutting down 2G networks globally. In most Western countries, the Nokia X1-01 no longer works at all, regardless of IMEI. Nokia X1-01 Imei Change Code
In developing nations where 2G remains active, automated IMEI audit systems now detect if an IMEI is invalid (incorrect checksum) or cloned. If you change the IMEI to a random number, the network will reject it instantly. The International Mobile Equipment Identity (IMEI) is a
Old Nokia feature phones (including the X1-01) had service codes intended for engineers and authorized repair centers. Among them were codes like: Some older MTK-based Nokia models had secret engineering
Some older MTK-based Nokia models had secret engineering modes that could rewrite the IMEI using specialized software (like AT commands via USB or flashing tools). However, no simple "keypad code" exists for the X1-01 to instantly change the IMEI without external tools. Any website claiming *#*#xxxx#*#* works is likely fake or malicious.
In theory, people seek IMEI changes for: