Mobile campaigns rarely look the same in every market. Ad formats, landing pages, offers and in-app messages can all change with location, and a desktop browser only shows part of the picture. That is why many marketing and app teams keep a few Android test phones in the office. Putting those phones behind a proxy lets the team see the mobile experience of another market without leaving the building.
Android supports this out of the box, with no rooting, custom firmware or unknown apps. This guide explains what the built-in setting covers, how to configure a test phone, and how to keep a small device lab tidy.
What Android's proxy setting covers, and what it does not
- It belongs to one Wi-Fi network. The proxy is saved against a single network profile, so the office Wi-Fi can be proxied while other networks stay direct.
- Mobile data does not use it. Run your checks over Wi-Fi.
- Browsers and many apps follow it; some apps ignore it. Test the specific app you care about rather than assuming.
- There are no username and password fields. Only a host and a port can be entered, which shapes how you should buy and authenticate.
Settle authentication before you order
Your dashboard shows the details for each active order: a host and port written as HOST:PORT, plus USER and PASS values for login. Because Android cannot pass that login, an office device lab is easiest to run with IP-whitelist authentication. Add the office's public IP address in the dashboard, and the phones can then connect with the host and port alone. Our proxies page explains the options for each type.
For phones that leave the office and change networks, whitelisting is harder to maintain. In that case keep the proxy to apps that accept credentials, or test from the office network only.
Which proxy type suits a test-phone lab
- Residential proxies for checking local search results, retail apps and landing pages the way home users in a region receive them.
- Mobile proxies when the check depends on a mobile carrier network, such as carrier-specific offers or mobile ad placements. The phone still joins your normal Wi-Fi; the exit address on the far side belongs to a mobile carrier.
Configuring a test phone
Menu names differ between Samsung's One UI and the Pixel's version of Android, but the route is the same.
| Step | Samsung (One UI) | Pixel and similar |
|---|---|---|
| Open network settings | Settings then Connections then Wi-Fi | Settings then Network & internet then Wi-Fi |
| Edit the connected network | Tap the gear icon beside it | Tap the gear icon, or long-press and choose Modify network |
| Show proxy options | Expand View more | Open Advanced |
Then, on either phone:
- Set the Proxy menu to Manual; it starts at None.
- Enter the host in Proxy hostname, for example
gateway.example.comor an IP address. - Enter the port in Proxy port, for example
8000. - Leave Bypass proxy for empty, or list internal hostnames that should stay off the proxy.
- Tap Save.
The setting takes effect straight away and stays with that saved network, even after Wi-Fi is switched off and on again.
Confirm it on the phone itself
Open Chrome on the phone and load our What is my IP page. The address shown should be the proxy's exit, not the office or carrier address. For a fuller check, our proxy checker confirms the connection responds, and the DNS leak test shows whether name lookups are going around the proxy.
If nothing loads, there are three usual suspects: a mistyped host or port, an order still set to username-and-password login, or a new office IP address that has not been added to the whitelist yet.
Testing a username and password login with Termux
If whitelisting is not an option, you can still prove that a set of credentials works before blaming an app. Termux, a terminal app available from F-Droid, can send a request through the proxy with cURL:
curl -x "http://USER:PASS@HOST:PORT" https://api.ipify.orgThe reply is the IP address the proxy exits from. When that works, any remaining problem lies with the app you are testing rather than the credentials.
Keeping a device lab tidy
- Label each phone with the market and order it is set up for.
- Note the date the office IP was whitelisted, and recheck it if the office changes internet provider.
- When a phone moves to other work, open the same Wi-Fi settings, set Proxy back to None and save.
Responsible use in a device lab
Test phones on a proxy are for reviewing geo-targeted content, checking your own campaigns and running your own accounts and apps. They are not for getting around a service's sign-in checks, reversing restrictions placed on an account, or breaking an app's terms of service. Staying inside those lines protects both your accounts and your proxy access.
Ready to set up the lab? The pricing page lists current per-GB rates. Put the order on IP-whitelist sign-in, and the phones need nothing more than a host and port.
