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The signal amplifier is a passive device designed to capture stray radiation in the body of the phone and re-radiate the signal to improve the phones performance. Even if you have a good signal were you are it does not mean you will have a strong signal in other parts of the country here and abroad, the booster increases the strength of the signal received.
You must have a signal for the chip to work on, if there is no signal obviously even with the chip in place the impossible cannot happen. But were you do have a weak signal it will work to strengthen that impulse
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Dont waste your money, on this or any other mobile phone booster, they do not work. its just a total waste of your time, effort and money. this scam has been around as long as mobiles.
i bought this and its rubbish im afraid.the best way to boost mobile signals is to get a proper signal booster.so i tried one from [...] customer service is great,quick replys and very friendly. i bought their gsm 900 [...} and im amazed how easy it was to set up,yes it will cost lot more than this product on this page but its well worth the money. give them a try instead
i purchased this thinking it would help, but living on the island, i think i need a sure signal device, this mobile signal booster, is all curled at the edges now, and not worth it. glad only spent a few pounds on it, its ready for bin.
Unlike the many nay-sayers posting here, I have used these boosters in several phones over more than 10 years; they DO make a difference, although they are not miracle workers - expect a 5-10% improvement in signal strength from 1 booster. You CAN use multiple boosters inside one phone; I did this with a Sony Z7e years ago, and improved average reception from 1 bar to 3 or 4 - signals in my area are very bad due to the dense rock of the neighbouring range of hills, adding the boosters meant I could get reception in 99% of the area I was working in.
There are plenty for sale on Amazon for under £5, join me in buying some!!!