Note you definitely don't need to buy a kit for the Libre as an android phone works well except Samsung S8 which I would check first.
Is anyone else having trouble with the Samsung s8? The s6 is not recommended by abbot, the s7 is widely slated in forums and i discovered to my cost that the s9...
The Abbot website is way out of date and not very informative on compatibility. The most recent Samsung on the list is the s8.
I can report that my s5 works great, but that an s9 i bought had to be sent back for a refund. The nfc on the s9 only works with the libre sensor when battery is nearly...