EMI problem of phone

My phone fails at 602Mhz when do a EMI test. it's radiation mode., but other frequences except this point from 30 Mhz to 6Ghz show OK , how to resolve this problem ?

This is a classical problem (I assume you have a wired phone, not wireless).

Wind part of the attaching cord (incoming line) several turns trough a splittable ferrite core. The core shall be made for UHF freq range.

my phone is wireless phone. EMI was captured through the radiation.

8) generaly devices fail RE(radiated emmision) test due to improper shielding. use the EMI probe to find the area where the radiation leak is more and try to improve the shielding. the PCB layout is also very criticle, try to use 4 layer boards or use "micro island" technique

EMI probe will be generally available with the EMI test house.