I would love to try them, they look really good, with solid tyres, a chain, and a large solar panel to feed the lock. However none of my cards are accepted by M

I would love to try them, they look really good, with solid tyres, a chain, and a large solar panel to feed the lock. However none of my cards are accepted by Mobike (including the two market leading banks). At least I can install the app, which I couldn't after their Singapore launch ("not available in your region"). oBike is for now the best UX in Singapore. Clean app, mostly works, and they've really started to get a grip on the broken bike problem. A recent Straits Times article claimed that of about 100 bikes reported parked incorrectly by the authorities, the oBike team removed 67 before the half day grace period ended (and got fined for the rest), so they seem to be on top of the illegal parking problem as well. The main issue with all of them is the spottiness of geolocation in built up areas. To an extent this is no longer a problem as you can find the things everywhere, but back when they were relatively rare it could mean a good 10-15 minutes of walking around looking for the mystery yellow pin. These days I even get a choice of model (my favourite has the shiny mudguards, the 3rd generation? they seem to have the least friction; but the massive 1st gen ones are very comfortable so long as you don't encounter any hills).