I recently bought this ZTE N919D which is the same as Blaze 5.0..I am using MTS SIM which came with offer of 100GB but my problem is i cannot use 3G in CDMA it connects to 3G but not working in 3G speed.I tried to change APN configuration as MNC in configuration is not set to my state but when ever i try to change it the settings did not worked it automatically deletes the APN setting so again i have to restore the APN Configuration..Can any one clarify me what would be the problem?