yes, 100% tested and support ios 6.1.3. it is very complicated for iphone 5 sprint due to the GSM/CDMA version, is not just the x-sim you buy else where will work on sprint iphone 5 6.1.3 this due to no jailbreak on 6.1.3, it need to have some special patch to this to work. otherwise your iphone will have problem sent SMS and no internet connection, we have this special patch to solve this. just bring your iphone 5 sprint to us, we will unlock it.
P.S: The below list is for Malaysia simcard that 100% tested and work with iphone 5 sprint ios 6.1.3.
Digi prepaid-SMS-yes, internet-yes(3G)
Digi postpaid nano-SMS-yes, internet-yes(EDGE)
Tunetalk-SMS-yes, internet-yes(3G)
Celcom Prepaid-SMS-yes, internet-yes(3G)
Celcom postpaid- (NOT Tested)
Hotlink-SMS-yes, internet-yes(3G)
Maxis Postpaid-(NO Network)
Maxis postpaid nano- (NO Network)
U mobile prepaid-No signal after 10min and signal not stable
U Mobile postpaid- (NOT Tested)
Japan set can support ??? Bcoz i got friend already has been "tipu" from other forum ... So he got iPhone 5 japan set ...