5 stars: Works good. Phone just has to be unlocked to work. been using for year just got it on my galaxy 4 watch and works good. had to go into settings of the watch... (not on phone) go to where you see NFC click that and Select Google pay as a default app or it will not work Then go into your settings change your top button double tap open Google pay
3 stars: While I find the app simple to use to add or delete cards. The biggest concern I have is that while I am not using the app, the NFC feature is always on which to me seems as a security Concern. It would be nice to have the app turn on the NFC function when using the app and when done it turns off avoiding any unauthorized transaction or theft.
5 stars: Unbelievably good. Not all credit cards work with it (in Canada TD and RBC for some unfathomable reason don't allow you to use their visa cards in mobile wallets). But if your credit card issuer does work with it (Amex, probably most MasterCards) then it is unbelievable good and easy to use to tap to pay everywhere you go without having to carry a wallet.
5 stars: Super handy to be able to pay for stuff without carrying my cards around with me. I had a problem with this app earlier this year but it's because I keep my driver's license in my phone case and the RFID chip in my license was interfering with the NFC sensor on my phone. I flipped my license so the chip was at the opposite end and now tap works great again :)
4 stars: Simple and easy to use for ...