Validation for IMSI number & IMEI NUmber

Question

Hii Experts, 
 please tell me how to validate the IMSI number and IMEI number and INTERNATIONAL Number?

Thanks

Mike Schmitt · Answer

IMSI is the same sort of pattern other than the length, as far as I know, this should be easy to adapt from the pattern you already have. 
 For "internation" phone number - that really depends on exactly what data you're getting, what format(s) you need to accept, etc. It can be a bit more complicated to formulate a RegEx pattern for, but generally should be possible... but we can't guess as to your precise requirements here, as the question is too vague without more detail.