This trick will allow you know the country of origin of your mobile phone
Press the following code on your mobile*#06# and the-international mobile equipment identity number appears. something similar to 343456001397734

Then check the 7th and 8th numbers: (in the above example the 7th and 8th digits are 00 which i highlighted in red)

according to an emial that i received from a company colleague (and the judgement of the quality of the mobile based on the country of the origin is also given by the same person and is therefore can be a matter of opinion)

IF the Seventh & Eighth digits are 02 or 20 this means your cell phone was assembled in Emirates which is very Bad quality
IF the Seventh & Eighth digits are 08 or 80 this means your cell phone was manufactured in Germany which is fair quality
IF the Seventh & Eighth digits are 01 or 10 this means your cell phone was manufactured in Finland which is very Good
IF the Seventh & Eighth digits are 00 this means your cell phone was manufactured in original factory which is the best Mobile Quality
IF the Seventh & Eighth digits are 13 this means your cell phone was assembled in Azerbaijan which is very Bad quality and also dangerous for your health