Original Nokia 1616 phones (circa 2010) used the algorithm. Back then, tools like NokiaFree or BB5/DCT4 calculators could generate an unlock code using just the IMEI.
, there is that can generate network unlock codes for free. While older Nokia models could be unlocked using tools like NokiaFREE Unlock Codes Calculator , these only support DCT3 and early DCT4 hardware. The Nokia 1616 Go to product viewer dialog for this item.
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To use a different carrier's SIM card, you must enter a specific network unlock code generated for your device's unique IMEI. Nokia 105 user guide: Keys and parts - HMD