Checking for valid IMEI - GSM-Forum

laxxe · 05-25-2003, 00:56

Hi!

What's the algo for checking if an IMEI is valid?

The last digit is some kind of control number, but what the algo for calculating if an IMEI number is valid?

laxxe · 05-25-2003, 12:53

Thanks mate!

Anyone knows if there's already made a javascript or PHP script that does check if an IMEI (entered in a form) is valid or not? If not, I'll try to make it myself...

Angello · 05-25-2003, 15:23

Look in your e-mail...

Lead · 05-25-2003, 18:12

Try the second link and select "view source". There is a JavaScript source.

laxxe · 05-25-2003, 22:01

I saw that, but it's not exactly what I want/need - but I'll take a look again :-)

Is it possible to determine which phone it is, by looking at the IMEI number?

35xxxxxxxxxxxxx is Nokia 3510
35yyyyyyyyyyyyy is Nokia 3510i
35zzzzzzzzzzzzz is Nokia 6310i
etc.

(I only need this for DCT4, but data about all phones are welcome :-)

laxxe · 05-26-2003, 01:04

Where do I find a list of these "type approval codes"?

And there's not just ONE code for each phone, right. I can see alot of different codes for the same model...

Lead · 05-26-2003, 01:35

Quote:

Originally posted by laxxe
Where do I find a list of these "type approval codes"?

That's a problem, but you might try an incomplete list at www.nobbi.com

Quote:

Originally posted by laxxe
And there's not just ONE code for each phone, right. I can see alot of different codes for the same model...

Right.

laxxe · 05-26-2003, 01:41

Perfect, thanks for your help!

laxxe · 11-19-2003, 02:59

Hi again!

I have a customer who have a Nokia 3110 with this IMEI: 490165105268360.

It DOESN'T have a valid luhn check digit? How come?

Haven't IMEI numbers always used the luhn check digit?

05-25-2003, 00:56	#1 (permalink)
laxxe No Life Poster Join Date: Apr 2001 Location: Denmark Age: 45 Posts: 1,698 Member: 4205 Status: Offline Thanks Meter: 9	Checking for valid IMEI Hi! What's the algo for checking if an IMEI is valid? The last digit is some kind of control number, but what the algo for calculating if an IMEI number is valid?

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05-25-2003, 12:53	#2 (permalink)
laxxe No Life Poster Join Date: Apr 2001 Location: Denmark Age: 45 Posts: 1,698 Member: 4205 Status: Offline Thanks Meter: 9	Thanks mate! Anyone knows if there's already made a javascript or PHP script that does check if an IMEI (entered in a form) is valid or not? If not, I'll try to make it myself...

05-25-2003, 15:23	#3 (permalink)
Angello No Life Poster Join Date: Jan 2003 Location: France Posts: 590 Member: 19927 Status: Offline Sonork: joe-lindien Thanks Meter: 58	Look in your e-mail...

05-25-2003, 18:12	#4 (permalink)
Lead No Life Poster Join Date: Aug 2008 Age: 52 Posts: 3,292 Member: 1841 Status: Offline Thanks Meter: 469	Try the second link and select "view source". There is a JavaScript source.

05-25-2003, 22:01	#5 (permalink)
laxxe No Life Poster Join Date: Apr 2001 Location: Denmark Age: 45 Posts: 1,698 Member: 4205 Status: Offline Thanks Meter: 9	I saw that, but it's not exactly what I want/need - but I'll take a look again :-) Is it possible to determine which phone it is, by looking at the IMEI number? 35xxxxxxxxxxxxx is Nokia 3510 35yyyyyyyyyyyyy is Nokia 3510i 35zzzzzzzzzzzzz is Nokia 6310i etc. (I only need this for DCT4, but data about all phones are welcome :-)

05-26-2003, 01:04	#6 (permalink)
laxxe No Life Poster Join Date: Apr 2001 Location: Denmark Age: 45 Posts: 1,698 Member: 4205 Status: Offline Thanks Meter: 9	Where do I find a list of these "type approval codes"? And there's not just ONE code for each phone, right. I can see alot of different codes for the same model...

05-26-2003, 01:41	#8 (permalink)
laxxe No Life Poster Join Date: Apr 2001 Location: Denmark Age: 45 Posts: 1,698 Member: 4205 Status: Offline Thanks Meter: 9	Perfect, thanks for your help!

11-19-2003, 02:59	#9 (permalink)
laxxe No Life Poster Join Date: Apr 2001 Location: Denmark Age: 45 Posts: 1,698 Member: 4205 Status: Offline Thanks Meter: 9	Hi again! I have a customer who have a Nokia 3110 with this IMEI: 490165105268360. It DOESN'T have a valid luhn check digit? How come? Haven't IMEI numbers always used the luhn check digit?