I have not experienced any such issue with my iPhone 6.
One issue has been The Weather Chanel program quit working, so I deleted it and downloaded their upgrade-—I do not like it as much as the older one and it is full of ads and lib crap.
I haven’t as yet bothered to see if there is something better available.
One possible replacement for The Weather Channel: NOAA Weather Pro. Costs (as I recall, five bucks) for their basic ap which so far has done nothing at all but show weather forecasts along with a very nice running radar display.
Have yet to see an ad on the thing besides upgrades and additional aps from the same vendor.