How to improve the antenna performance of the esp32 d2wd

[Smartisan]

Hi everyone ,we are developing the esp32 d2wd, i want to ask how can we improve the antenna performance of the esp32 d2wd? Because we now use the esp32 d2wd but when we transieve the message between esp32 d2wd and mobiphone,the date always interruput, we doubt the esp32 d2wd antenna was not so well,we designe the pcb and put the esp32 d2wd in it.

[WiFive]

Did you do matching with VNA?

https://esp32.com/viewtopic.php?f=12&t=1060
https://esp32.com/viewtopic.php?f=12&t=846&p=4768

[Smartisan]

I want to know why the esp32 d2wd lose date when transeive the information between the chip and mobile phone?For the UDP or not?

[Smartisan]

The wifi channel 6 can be selected?