after factory reset phone block the calls and receives. also..

after factory reset, blu is everything ok but when i dial imei says invalid. i tried everything online even chamelephon and still getting invalid imeis. What happens is that i write oriiginal imeis in chamelephon and apply them.. after rebooting i-m in the same place with the same problem...

also i saw a solution in mtk engineering mode app but it-s missing the cds information and cant write imeis. i tried sn writer following all steps, neither..

so many problems with imei. only way i can change imei in chamelephon is random and apply them and rebooting. but when it generates random number after rebooting i have symbols letters and numbers in my imeis.. so dont understand what this app is doing..

i checked and sim works perfect in other device... is a problem of blu build for this phone.. they dont share the answer..

i tried to install nougat thinking it s a marshmallow problem.. cant get nougat in this phone.

rf test fails but it s a test saying the same im telling you (when i enter in factory mode)..

i tried many many things. and this phone has many many problems, poor support poor community support. official support sucks. because of the price of the phone..

so, cheap cost expensive along the way..

i can rooted and installed twrp but dont know where or how to fix the calls and receive problem.. as if the phone is blocked because of the imei??

but when i random imeis it happens the same.. and sims get cellular network disconnected.. too much $@$* around.

also try an option to stay data cellular always active in developer mode but i think that work 1 time and then dont know what happen but $@$* happen again..

if anyone can help me would be great. i tried so many things many days and i m really tired of this non sense and no solution wheel.