In reply to Pietrach:
I fear you've got a potentially serious safety management problem here, Pietrach. If you feel you must accept your partner's condition on this first occasion, you create (a) a significant risk of a false alarm because you find you're unable to send your text as and when required; and (b) a long-term problem if your partner then applies the same condition for all your subsequent high camping ambitions, when you won't know in advance, and won't always be able to find out, whether or not you'll have phone coverage on the top. But you've probably thought of that ...
I did wonder when I read your earlier thread whether you'd be better to start with a camp not right on a summit but in a high corrie, where you'd have more scope for finding a site sheltered from the risk of high wind, and perhaps less concern for your partner. But then you'd quite possibly have less chance of a good phone signal!