Esp8266 (ESP 01) as AP for Android

Hi,

since several days I'm trying the following but I fail.

I have an ESP 01 (better said: I have two, but it's the same problem on both).

I configured the esp to be an AP using a sketch and using the at commands.
The results using both methods are the same:

Using no password (open WIFI):
I can connect from PC, iPad and two Android Smartphones (both Honor 9 Lite)

Using a password:
i can connect from PC, iPad but not from the two Android devices.


Version information from AT:
AT+GMR

AT version:1.3.0.0(Jul 14 2016 18:54:01)
SDK version:2.0.0(5a875ba)
Farylink Technology Co., Ltd. v1.0.0.2
May 11 2017 22:23:58
OK


Debug information from my sketch:


Mode: AP
PHY mode: N
Channel: 7
AP id: 0
Status: 255
Auto connect: 1
SSID (8): ........
Passphrase (8): ........
BSSID set: 0

[...]
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
add 1
aid 1
station: 10:44:00:dd:5d:a5 join, AID = 1
wifi evt: 5
wifi evt: 7
wifi evt: 7
station: 10:44:00:dd:5d:a5 leave, AID = 1
rm 1
wifi evt: 6
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7
wifi evt: 7

[...]

So it seems that the Android is connecting and disconnecting again.

Does anybody has a clue what I'm doing wrong?

BR