Service provider blocking ports? Are you all with the same provider?

You have proved the devices and the account settings if it works on LAN so the only thing I would say is left would be a service provider issue.

1 minute ago, sixwheeledbeast said:

Service provider blocking ports? Are you all with the same provider?

You have proved the devices and the account settings if it works on LAN so the only thing I would say is left would be a service provider issue.

I connect through virgin media to samsung ddns then to his talk talk router, his wife's isp is the same as his isp talk talk, same ddns settings in the app and she can connect all ok just his phone.

Mobile service provider. They often use CGNAT.

28 minutes ago, sixwheeledbeast said:

Mobile service provider. They often use CGNAT.

Sorry I really don't know what you mean, they are husband and wife. Wife has talk talk isp the same as him both using ipolis apps on their iphones both have the same settings in the ipolis apps  sit together in their home both on 4g wife can connect he can't.

43 minutes ago, sixwheeledbeast said:

Mobile service provider. They often use CGNAT.

O yes just figured out what you mean I don',t know who their mobile isp is I will find out if they are the same one tomorrow and will re post, when you think about it the only thing different could be their sim card provider.

 

cheers

https://en.wikipedia.org/wiki/Carrier-grade_NAT#Disadvantages

May give you a basic understanding of what I mean.

It's normally more of an issue for hosting a service than connecting.

I'd have a guess the device with the issue will be Telefonica carrier.

6 minutes ago, sixwheeledbeast said:

https://en.wikipedia.org/wiki/Carrier-grade_NAT#Disadvantages

May give you a basic understanding of what I mean.

It's normally more of an issue for hosting a service than connecting.

I'd have a guess the device with the issue will be Telefonica carrier.

Thanks for that I will be on the case tomorrow, but I have just found out by my wife that our daughter is on a different mobile network than her husband, so that might be the answer just strange it has been working ok for over 3 years.

thanks again.

22 minutes ago, bjj said:

Thanks for that I will be on the case tomorrow, but I have just found out by my wife that our daughter is on a different mobile network than her husband, so that might be the answer just strange it has been working ok for over 3 years.

thanks again.

O2 won't work neither does ee for many users 

Recent problem 

Just now, al-yeti said:

O2 won't work neither does ee for many users 

Thanks, I am on talkmobile thats ok, wife is on 3 thats ok, don't know what my daughter or her husband is on yet. but as I said strange it's just stoped working it's been ok for over 3 years.

 

cheers

2 minutes ago, bjj said:

Thanks, I am on talkmobile thats ok, wife is on 3 thats ok, don't know what my daughter or her husband is on yet. but as I said strange it's just stoped working it's been ok for over 3 years.

 

cheers

Your not on talk talk 

 

What network is talk talk using O2?