Hello. New member so go easy on me!
Need wifi calling because Signal on any network here is just ***** (and yes, have ordered a bunch of PAYG sims and they all have issues - location, house etc).
So - I've just received an S20 FE 5G (replacement for a Note 4!), came from Vodafone but has been factory resetted because of Corporate security requirements. It 'appears' to be unlocked because I've put a Vodafone, Sky & Three sim in and all work fine and register and i can receive calls.
So, onto issue 1 (now fixed) - Vodafone (Business) - Initially Wifi calling wasnt present at all - not even a button on the phone. After some discussions with Vodafone & Samsung (Samsung said its not the phone, its a Network Operator issue), did a lot of restarting and sim updates, eventually got it to work... Vodafone had to 'do something' = they wont say what.
So, Sim 2 (Vodafone) now works perfectly with Wifi Calling.
So, onto issue 2. Sky. I have Sky Mobile as personal number and picked this phone as it has dual sim etc.
Tried to get it working using Wifi calling - wont activate. Icon there, says its active for Sim 1 (Voda is Sim 2). So, i thought, "phone sky" get them to turn it on, blah blah etc.
Lots of conversations later and me blaming Sky, turns out its not Sky...
If i put the Sim in another Samsung (A12), Wifi calling activates immediatly.
So back to the drawing board.
If i put a THREE Sim in, either on its own, or with the Vodafone sim card in Slot 2 - wifi calling works!
Its as if it doesnt like the Sky sim!
And note, to test wifi calling i've been turning on flight mode, then activating wifi.
So, to summarise...:
If i do the above on the A12 though > All hunky dory and Wifi calling works on all three networks.
Any ideas ladies & gents because im seriously getting frustrated now.
Phone is all up to date etc.