According to the analyst Christopher Rolland( Susquehanna
Financial Group semiconductor), Apple’s next generation Apple Watch may add a
cellular connection with SIM card and LTE support.
According to the analyst Christopher Rolland( Susquehanna Financial Group semiconductor), Apple's next generation Apple Watch may add a cellular connection with SIM card and LTE support.

We understand a model of the next Apple watch will include a
SIM card, and therefore is likely to support LTE. We understand some issues
remain, including battery life and form factor size, but significant progress
has been made. Apple may be employing VOIP and data across a CAT-M1 connection
for superior battery life. Apple will tout interoperability with the company’s
AirPods (now on back order till May) to make and receive phone calls (perhaps a
small win for Maxim with amps in each ear bud).
The company has been researching low-power data
chips which could bring cellular connectivity on next Apple Watch without loosing much battery
life.