learn how to calculate network lock by imei

[favzan]

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IMEI to network lock algo​

The algorithm transforms an IMEI number into Network lock

1. Split into pairs: Take two digits at a time from left to right.
2. Add digits in each pair: Keep only the last digit of the sum.
3. Use the first digit: Instead of the last digit of the IMEI, add the first digit to the result.
4. Combine: Join everything to get the final number.

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Example 1: IMEI 354065369874555​

1. Break into pairs: 35, 40, 65, 36, 98, 74.
2. Add digits in each pair:
   • 35 → 3+5=83 + 5 = 8 → Keep 8
   • 40 → 4+0=44 + 0 = 4 → Keep 4
   • 65 → 6+5=116 + 5 = 11 → Last digit = 1
   • 36 → 3+6=93 + 6 = 9 → Keep 9
   • 98 → 9+8=179 + 8 = 17 → Last digit = 7
   • 74 → 7+4=117 + 4 = 11 → Last digit = 1
3. Use the first digit: The first digit is 3.
4. Combine Results: 8419713

Final Output: 8419713

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Example 2: IMEI 354012365897456​

1. Break into pairs: 35, 40, 12, 36, 58, 97.
2. Add digits in each pair:
   • 35 → 3+5=83 + 5 = 8 → Keep 8
   • 40 → 4+0=44 + 0 = 4 → Keep 4
   • 12 → 1+2=31 + 2 = 3 → Keep 3
   • 36 → 3+6=93 + 6 = 9 → Keep 9
   • 58 → 5+8=135 + 8 = 13 → Last digit = 3
   • 97 → 9+7=169 + 7 = 16 → Last digit = 6
3. Use the first digit: The first digit is 3.
4. Combine Results: 8439363

Final Output: 8439363

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Summary​

• IMEI 354065369874555 → Output: 8419713
• IMEI 354012365897456 → Output: 8439363

This algo works on sprd devices like hisense tecno itel and other, {note: newer version use diffrent algo}

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[starmoo1z22]

Model Description: IPHONE 13 MIDNIGHT 128GB-USA IMEI: 359175921529241 IMEI2: 359175921701147 MEID: 35917592152924 Serial Number: QW5JMMVWK5 Warranty Status: Limited Warranty Estimated Purchase Date: 2023-12-30

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