CEL-FI WAVE 4+

the application looks pretty good. It has a lot of information about the device but there is no guide inside the application to know each function

This simple app helped me fix issues I was having with 2 sets of boosters from Tmobile. The issue was that the boosters were defaulting to band 2 over band 12 or 4 and would not release it even after multiple resets. The first unit I thought the booster was defective because first power up it had 4-5 bars then boom down to one and LTE dropped off. Multiple resets and no change. I sent it back to Tmobile and they sent another. Same result I turned it in 5 bars I smile wait 5 min and jumps to one bar and my frustration starts. I thought it was defective as well. I called my networking friend and he said download this app and see if band 2 is checked! By simply downloading this app going to my coverage unit opening the app clicking the booster settings tab and I checking band 2 was all it took. It took me 1 min to fix the issue I was having for 6 weeks. This app also shows some basic networking statistics as well for you. It may not have every option a technician needs but it suited my needs nicely and by the way it was FREE. Thank you for this app!!!

First, the app says it provides installation/setup instructions. However if you open the app before you set up your booster, the app hangs at looking for a booster with no option to do anything - one can only close the app. Secondly, the app does not agree with your tech/customer support. I set the booster up for the first time, and it continued to blink a green light which the app says, but if it does not go steady within 30 minutes to power down and power back up, which in my case did not solve the issue. The app continues to, tell you, you may need to register your device with your provider. I found instructions online on the Nextivity site for registering the booster with AT&T on the AT&T website that did not work AT&T customer service advised me to return the product and buy their booster when I got an email response from your customer service, they did not acknowledge the need to register and insist for me to try again.