Well, no phone is 100% water resistant, but out of the box the 10 II has IP 65/68 rating, wear and tear and a product that had been “made on a Monday after a heavy party” is another story. 
| Rating | Dust | Water |
|---|---|---|
| IP65 | Protected from total dust ingress. | Protected from low pressure water jets from any direction. |
| IP68 | Protected from total dust ingress. | Protected from long term immersion up to a specified pressure. |
No and no, it supports 11, but the 10 III has VoLTE support and 6 GB RAM
You can hopefully find your country and network provider here.
