I have an unlocked iPhone 5s with 7.04 and evasion7 1.02 jailbreak. I have an AT&T sim and a T-Mobile sim. I have no network issues when I use the AT&T sim but when I install the T-mobile sim the network becomes erratic. For example when I try to place a call it fails 5 out of 6 times and the 4G and/or LTE icon disappears for a few minutes. I restored the phone to factory settings to remove the jailbreak and tested the T-Mobile sim and it worked properly with no network issues. I really want to switch to T-Mobile and have a jailbroken device. Has anyone seen this type of issue or have any advice how to resolve it?