How does the LTE calling work?

Discussion in 'Apple Watch' started by Mapple86, Oct 30, 2018.

  1. Mapple86 macrumors 6502

    Apr 13, 2015
    Can anybody explain, how the LTE on the apple watch is working?
    Does phone calls come to the watch, because the esim has the same phone number?
    Or is it like the phone call feature of the wifi ipad?

    Would it work to have an only data esim on the watch without a „phone number“ and the calls from the iphone comes to the watch over lte while the phone is at home?
  2. KarimLeVallois macrumors 68010


    Feb 22, 2014
  3. Mapple86 thread starter macrumors 6502

    Apr 13, 2015
    Ok so it would be possible to use a prepaid esim card from an other carrier with ~250MB data?
    If any prepaid carrier would offer esim cards.
  4. menace3 macrumors 6502a


    Aug 13, 2008
    Seattle, WA
    Yes phone calls come to the watch independently of the phone when signed up for LTE service. In fact, if you have your phone, it should ring both on your watch and iphone. Most companies are using some kind of number syncing software, so you need to have a "phone number"

    If you decide to not sign up for LTE, then it will work like the ipad on wifi.

    AT&T has a little bit of explanation on their site:!/wireless/KM1223159?gsi=LPjJmB0
  5. dave006 Contributor


    Jul 3, 2008
    Just West of East
    No it would not work. The eSIM stands for electronic SIM, as in on the circuit board and not a separate SIM card. The watch only works with the same carrier as the paired iPhone and must also on the same post-paid billing account.


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4 October 30, 2018