Yes. Nokia 7.1 comes with a hybrid slot. You can use MicroSD card of up to 400GB capacity.
Yes, Nokia 7.1 does have OTG support.
The Nokia 7.1 has Qualcomm Adreno 509 GPU.
No. Nokia 7.1 does not carry any kind of IP certification or ratings. The mobile is certainly not a water-resistant or dust-proof mobile.
Nokia has quietly released one of the most exciting inexpensive phones of the year in the Nokia 7.1, a well-designed phone that delivers first-rate performance.
With the Nokia 7.1, the brand continues its run of impressive mid-range phones carrying close-to-stock Android. While the phone has weaknesses, overall it offers better quality and features than you would expect at this price.