# File transfert and loopback problems

**URL:** <https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235>\
**Category:** 📱 Desktop & mobile clients\
**Tags:** aio, ncp\
**Created:** [August 30, 2025, 1:50pm UTC](https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235 "2025-08-30T13:50:27Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![01power](https://help.nextcloud.com/letter_avatar/01power/32/6_22734026db12803ebb3e059622ac3534.png) [@01power](https://help.nextcloud.com/u/01power)\
**Post date:** [August 30, 2025, 1:50pm UTC](https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235/1 "2025-08-30T13:50:27Z")

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hello,

i’ve solve installing AIO on my Pi3b+, and end configure wan access

but i have somes news problems :

- i try to sent just a picture from my phone (connect by data to internet) to my nextcloudpi and the tranfert don’t realy start
- on the computer, i have drop a file in the folder and the transfert are ok
- when i connect my phone to my lan by wifi, i can’t connect to my cloud
- i have folow my internet provider to active the loopback but that stil don’t work
- i don’t have find how to set in the app how to make a switching méthode for lan/wan

i have make somes research on the forum but i don’t find the answer i need

could you help me

ps i’m french so as possible use the more simple words you can

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**Author:** ![geoW](https://help.nextcloud.com/user_avatar/help.nextcloud.com/geow/32/67506_2.png) [@geoW](https://help.nextcloud.com/u/geoW)\
**Post date:** [August 30, 2025, 3:08pm UTC](https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235/2 "2025-08-30T15:08:55Z")

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Nice reading:  
[https://help.nextcloud.com/t/101-split-brain-dns-split-horizon/202579](https://help.nextcloud.com/t/101-split-brain-dns-split-horizon/202579)  
[https://help.nextcloud.com/t/101-network-domain-and-dns/201882](https://help.nextcloud.com/t/101-network-domain-and-dns/201882)  
[https://help.nextcloud.com/t/101-self-hosting-information-for-beginners/187015](https://help.nextcloud.com/t/101-self-hosting-information-for-beginners/187015)

Other topic is even well known issue. Do some reading on github issue discussions desktop clients android or ios.

Being french is no excuse anymore 😉.

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**Author:** ![01power](https://help.nextcloud.com/letter_avatar/01power/32/6_22734026db12803ebb3e059622ac3534.png) [@01power](https://help.nextcloud.com/u/01power)\
**Post date:** [August 31, 2025, 9:34am UTC](https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235/3 "2025-08-31T09:34:59Z")

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linux base systems are not easy for me i don’t undertand all, in your links i dont see information who help me,

exept potentaly the Pi hole but dit it need an other Pi ?

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**Author:** ![01power](https://help.nextcloud.com/letter_avatar/01power/32/6_22734026db12803ebb3e059622ac3534.png) [@01power](https://help.nextcloud.com/u/01power)\
**Post date:** [September 12, 2025, 1:35pm UTC](https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235/4 "2025-09-12T13:35:45Z")

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hello all,

when i’m connected with my phone to the same rooter than my pi, i cant access to my nextcloud, so i must turn off my wifi on my phone to be connected to the data to access to it,

somes times he don’t want to receve files

i don’t find goods answer about the loopback with my internet provider

i don’t have find how to set in the app how to make a switching méthode for lan/wan

could you help me ?

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**Author:** ![system](https://help.nextcloud.com/user_avatar/help.nextcloud.com/system/32/29333_2.png) [@system](https://help.nextcloud.com/u/system)\
**Post date:** [November 28, 2025, 1:50pm UTC](https://help.nextcloud.com/t/file-transfert-and-loopback-problems/231235/5 "2025-11-28T13:50:49Z")

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