Ok did the GSM trick to save a little more battery life, I get about 30 hours with he usual tricks . Task killer , display to low and etc, etc. I decided to do the Gsm to CDMA prl trick that was suggested. At first it gave me good results but I noticed I lost 4g service when I was in my house. So went outside to do speed test and got bad results. Figured it was the chicagoland weather. I had to do a soft reboot and forgot to do the CDMA trick, turned on 4G and bam I have service. So did a test with CDMA prl I get no 4G service and switched to GSM i get service..It's driving me nuts. Any help or insight appreciated. Thanks in advance, this site is always helpful.