Using a Pixel 5 as a Personal Google Photos Backup Bridge

For my personal daily use, I do not want to wait until I get home before my photos are backed up. I want to take a photo on my main phone and have it appear in Google Photos as quickly as possible.

For a simple setup with only one or two people, I use Syncthing to bridge my current Android phone and my Google Pixel 5. The Pixel 5 stays plugged in at home 24/7 on Wi-Fi, while my main phone is the phone I actually use every day.

This setup is much simpler than a full family photo server. There is no Immich server, no old laptop middleman, and no large home storage problem to manage. It is just my phone sending photos to the Pixel 5, then the Pixel 5 uploading them to Google Photos.

The Basic Workflow

Main Android phone
> Syncthing over Wi-Fi or mobile data
> Pixel 5 at home
> Google Photos Storage Saver backup

1. I take a photo on my primary Android phone.
2. Syncthing detects the new file in my camera folder.
3. The file is sent to my Pixel 5 over the network.
4. The Pixel 5 receives the file at home.
5. Google Photos on the Pixel 5 uploads it using Storage Saver.

The useful part is that both phones do not need to be on the same Wi-Fi network. Syncthing can work over mobile data too, so I can take photos outside and still have them passed to the Pixel 5 at home.

What I Sync

I only sync my camera folder. I do not sync every image folder from the phone.

This keeps the setup cleaner. Screenshots, downloads, app images, and random media do not automatically enter the backup flow unless I intentionally put them into the camera folder or configure another folder later.

The Most Important Syncthing Setting

The most important part of this setup is folder direction.

Device	Syncthing Folder Type	Reason
Main Android phone	Send Only	The original phone should only send photos out.
Pixel 5	Receive Only	The Pixel 5 should only receive photos for Google Photos upload.

This protects the original phone. If I delete photos from the Pixel 5 after Google Photos uploads them, the deletion should not sync backward and remove the originals from my main phone.

In my current setup, I do not delete the originals from my main phone because I still have enough phone storage. But when I change phone in the future, I can reset the old phone without worrying too much, because the photos have already gone through the Pixel 5 backup flow.

Why Android Works Better Than iPhone for This

This guide is mainly for Android users. On Android, Syncthing or Syncthing-compatible apps are much easier to use for this kind of background file sync.

iPhone is more complicated. There is no official Syncthing app for iOS from the Syncthing team. There are third-party iOS apps such as Möbius Sync and Synctrain, but they are not the same as running Syncthing freely on Android.

The main limitation is iOS background behavior. Möbius Sync explains that iOS apps cannot run continuously in the background, so sync may only happen when the app is open or during limited background activity. Some iOS Syncthing-style apps also use paid features for fuller functionality.

I have not personally tested the iPhone method, so I would treat iOS support as possible but not ideal. For this quick personal backup bridge, Android is the cleaner option.

Why the Pixel 5 Works Well for This

The Pixel 5 stays plugged in 24/7 at home with Wi-Fi. It is small, quiet, and efficient enough to act like a dedicated photo upload device.

Once Google Photos sees the new files on the Pixel 5, it uploads them using the Pixel 5’s Storage Saver backup support. For normal photo viewing, Storage Saver quality is good enough for me.

The Pixel 5 is not my master photo library. My main phone is the source. The Pixel 5 is only the receiver and uploader.

What This Setup Is Good For

• One person backing up from one main Android phone.
• Two people who are comfortable managing Syncthing.
• Quick photo backup while outside.
• No cable transfer.
• No home server required.
• No need to wait until reaching home Wi-Fi.

The biggest advantage is that I can take photos anywhere and let the backup happen automatically. Syncthing can pass the file to my Pixel 5 at home, and Google Photos can upload it from there.

What This Setup Is Not Good For

This setup does not scale nicely for many people. If several family members need to upload photos, managing direct Syncthing connections from every phone to the Pixel 5 can become messy.

For a bigger household, I prefer using a home server and Immich as the middleman. That setup is easier to centralize because every family member uploads to one server first, and the server handles the pipeline to the Pixel 5.

Pros and Cons

Pros	Cons
Quick backup from anywhere	Works best with Android
No cable needed	Not ideal for many users
No home server required	Syncthing needs careful folder direction setup
Pixel 5 can stay plugged in at home	Pixel 5 storage may need occasional cleanup
Good for one or two people	iPhone support is more limited and may require third-party paid apps

Final Thoughts

For one person, this is my favorite simple Pixel 5 backup setup. I take a photo on my Android phone, Syncthing sends it to the Pixel 5 at home, and Google Photos uploads it. It is quick, automatic, and does not require me to change my daily habit.

The key is to configure the sync direction correctly: the main phone should be Send Only, and the Pixel 5 should be Receive Only. That way, deleting files from the Pixel 5 later does not delete the originals from the phone I actually use.

For quick personal backup, this setup works very well. For many users or a whole family, I would move to a home server and Immich instead.