what the source of limited service

[mkwatis]

I have Sgh 600 displays limited service but when i use code to reset eeprom *2767*2878# becomes ok for few hours then repeat the same thing what is the solution permanently for this

[MrWolfman]

there are a number of reasons for this the main one is that the phone has been unlocked
if u check your emi number *#06# you may find that its changed from the default emi on the box and back of the battery
you will need an emi number changer/restorer to reset it to default

if its not that then it may be the normal for samsung phones as the t100 does the same quite often. if its happening too much then take it back