The Digital Keys app works with all Android phones version 4.0 and above, and iPhone phones 6.0 and above.
To use the ‘write to NFC token' feature (for writing to keycards, fobs, stickers and NFC ring)’ you will need an Android phone with Host Card Emulation (HCE). To see a list of HCE Android phones go to https://www.digitalkeys.io/smartphone-apps
We supply 3 keycards with every NB-IoT smartlocks that will work permanently. You will only need the Android HCE phones if you intend to make these keycards time-sensitive and on a regular basis (such as in a hotel use).
We will ensure NB IoT is switched on and working well near your address - this is the only other requirement for using NB-IoT smartlocks - or in other words we make sure you have network coverage before selling your our NB IoT smartlocks.