Why does android sip client truncate caller display name on incoming call?

Question

Android

Several sip dialers for Android have been tried. All of them are not able to show on the screen the long name of the subscriber, which substitutes the PBX. As a result, the name is shown in a cropped form. I found the answer to the TP of one of the leaders in the mobile softphone market (Zoiper) and it did not suit me at all. I quote:

Zoiper has exactly the same character limitation as the default Android dialler. Unfortunately there is not enough space to fill everything.
You can get afterwards the needed information by going to the call log and expanding the details from the last call.

Meanwhile, proprietary dialers from specific PBXs, such as Mango Talker, easily bypass the restrictions and display very long names on the screen without problems.
Considering that the name field is one of the few ways to quickly show additional information about the client before receiving the call (not just the name), I would like to consider possible ways to solve the problem.

Answer 1

SIP is a set of recommendations, not standards. Each manufacturer implements it as he likes, only half of the functionality is fully compatible.
Choose according to your needs. And that's it.