... jailbroken, it will increase the number of different functions. For example, Coopee KT200 can achieve the function of making ... calls, sending messages, GPRS, radio and charging for ipod touch4. ParameterNetwork standard GSM,Built-in GPRS moduleApply ... color black, whiteEarphone jack 3.5mm Earphone jackApply scope For ipod touch 4Talk time 8 hoursstandby time 200 hoursIncluded ...