If you are visiting Sweden from abroad, having a good telephone connection is essential while on trail. The best cover, even in the *mountains, is by far Telia. You can buy a prepaid “cash card” and refill it if and when you need. This means you’ll also get a new number.
If you need any help, whatsover, don’t hesitate to get in touch: info (at) viasuecia.com.
*Nota bene: there might be places far up in the North where the reception will be bad or even non-existing. Being proactive with your phone can help.