Which radio IP phone to choose?

Question

Telephony

Recommend radio IP phone.
Requirement:

• support for up to 4 handsets, and up to 4 simultaneous calls;
  
• convenient non-braked menu;
  
• phone book support;
  
• support for contact groups is very important.
  

We choose for the office. At the moment, there is Yealink w52p, the slow menu does not suit, contacts (about 60) are scrolled for a very long time, there are no contact groups, which leads to a long search for entered contacts.

Answer 1

Are you sure that this actually happens?
I thought that only one handset out of 4 can make/receive calls at the moment and only on 1 line. That is - one trumpet calls - the other 3 smoke bamboo ...

Answer 2

Samsung smartphones have the ability to use SIP over WiFi - but my testing didn’t go any further.
In theory, there should be other devices on android