can not send/receive MMS

[LuckyTonySun]

I still can not send/receive image from text message.

my data is turned on. my phone is redmi note 7, and set the APN based on the following: 

I could receive and send images before, and I don't remember I have changed anything. 

any ideas?

[softech]

@LuckyTonySun 

if you are not using Google Message, download it from Google Store and set it as the default SMS/MMS app and try sending using Google Message

if you are already using Google message , backup all the important messages, then go to app settings and Clear Data (please note all messages will be gone!!).  Then Force Stop and reboot the phone and test again

[LuckyTonySun]

I did find a mistake, then change "https" to "http", reboot, when send a new message comes out "Can't send message right now, Too many unsent multimedia messages". re-send  an old mms, failed after a long time.

[RavingRaven]

@LuckyTonySun 

If you can recieve MMS then you should be able to send. Double check your APN for any tiny errors like a missing period or an extra space. Can you post a screenshot of your current APN settings?

[LuckyTonySun]

right now, it seems I can receive MMS but still sending error.  I am thinking to say goodbye to public mobile

[LuckyTonySun]

already read. Unfortunately it refuses to work.

[LuckyTonySun]

@softech @RavingRaven 

after adding a new APN, my old 3 apns (koodle, public mobile, telus) disappeared, reboot, still not working.

[softech]

@LuckyTonySun 

try this, look like a bit more than your screenshot (as yours were cut off)

you might want to create a new APN profile, save it properly and select it to use instead of updating the existing one (some people really need to use a new one instead of the update one to make it works)

APN: sp.mb.com
Proxy:
Port:
Username: <blank>
Password: <blank>
Server:
MMSC: http://aliasredirect.net/proxy/mb/mmsc
MMS Proxy: mmscproxy.mobility.ca
MMS Port: 8799
MCC: 302
MNC: 220
Authentication Type: Not Set
APN Type: default,supl,mms
         or    default,mms,agps,supl,fota,hipri
           (might need to include DUN for hotspot, please note case sensitive)
APN protocol: IPv4
APN roaming protocol: IPv4
APN enable/disable: APN enabled
                or  Turn APN on/off APN turned on
Bearer: Unspecified
MVNO (Mobile virtual network operator) type: GID
MVNO (Mobile virtual network operator)value: 4D