Telus Bell Signal Problem

I am currently experiencing a weird thing with multiple phones on my Boat.

I have a Wilson Dual-Band (800/1900 MHz) Mobile Wireless (801201) Booster/Repeater with a Marine Antenna outside.

I have 4 Phones I can use..

These phone have all been tested directly on top of the inside antenna of the booster.

1 Samsung Smart Phone (BELL)
1 iPhone 5 (BELL)
1 iPhone 4 (TELUS)
1 Ericsson W35 Turbo Hub. (BELL)

Here is my problem.

The Telus iPhone 4 is getting signal and fully functional up to 10 Miles further than the other 3 Bell phones..

Now here is where it gets tricky.,,. I am told Telus does not own cell tower sites in my area. They lease them From bell.

The other thing is,.,. The Samsung gets signal, but it limited to EMERGENCY CALLS ONLY.

Can someone shed some light on this? Are telus phones programmed differently?

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What model is the Samsung phone? You're getting only voice signals, correct?