Imei number vs batch date

[Wah007]

If one phone has a smaller imei number than the other one does that mean that the one with the smaller number is from an older batch?

E.g. phone 1 imei number ends with 351733 and phone 2 imei end with 351271 (both phones same make and model)

I'm asking because I got a phone on contract with a higher Imei number but it was faulty, so they sent me a new replacement but the imei number was smaller than the first phone. Was just wondering why they would send me a phone from an older batch.

 

[Orcvader]

I don't think that's how it works... How an IMEI number is generated is a bit more complex compared to just date: http://en.wikipedia.org/wiki/Intern...e_IMEI_and_IMEISV_.28IMEI_Software_Version.29

My old 2011 Xperia PLAY has a "higher" IMEI number than my 2013 HTC One M7.

 

[Wah007]

I don't think that's how it works... How an IMEI number is generated is a bit more complex compared to just date: http://en.wikipedia.org/wiki/Intern...e_IMEI_and_IMEISV_.28IMEI_Software_Version.29

My old 2011 Xperia PLAY has a "higher" IMEI number than my 2013 HTC One M7.

Ah right, I was trying to search Google for this but could not find anything.

Thanks for that, much appreciated