Phone Guardian: Security

In-app purchases
Content rating
Everyone
1+
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Content rating
Everyone
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About this app

Phone Guardian: Security watches the five doors scammers use — calls, sites, SMS links, apps and the device itself — all inside your phone. Install it, tap "Start", and you're done. No difficult setup.

■ What it does
- Stops suspicious calls: blocks calls from overseas and calls faking numbers that do not exist, before your phone rings. People in your contacts always get through.
- Stops dangerous sites: blocks connections to scam sites, fake warnings and phishing pages before they open.
- Checks SMS links: paste a message as it is, and the app finds and checks the links inside. It does not read your messages.
- Inspects your apps: checks whether a remote-control app or a fake copy of a real app is installed.
- Inspects your device: checks the condition of the phone itself.

■ This app uses VpnService (a local VPN) to watch for dangerous sites
To stop connections to dangerous sites before they open, this app uses a local VPN based on Android's official VpnService, entirely inside your device. VpnService is required because it is the mechanism that lets the app check, inside your phone, the name lookups made by any browser or app, and stop the ones that lead to dangerous sites. The app never connects to an outside VPN server, your traffic never leaves your device through this app, and it never collects or sends the contents of your traffic anywhere. You can stop the guard at any time with the "Stop" button.

■ Built for peace of mind
- No collection of call audio, SMS text or browsing content
- No ads, and no account registration
- Every check finishes inside your phone

■ Pricing
Try every feature free for 3 days. To keep using the app, make a single one-time payment. There are no monthly or yearly fees and no auto-renewal. With the same Google account, you do not need to buy again after changing phones (the app can be used on one device at a time).

■ Recommended for
- Anyone troubled by nuisance or scam calls
- Anyone who wants to protect a family member's or an older person's phone
- Anyone worried about fake warnings and scam sites
- Anyone who wants extra safety without difficult setup
- Anyone looking for a security app with no ads and no subscription

■ Please note
- The app cannot guarantee that every scam call or dangerous site will be stopped
- It does not scan files for viruses
- By Android's design, only one VPN can run on a phone at a time. If Phone Guardian: Ad Blocker is on the same phone, that app takes over the site guard, and the two apps work side by side
- The lists used for the guard are updated regularly

A quiet guardian inside your phone.
Try it free for 3 days.
Stops suspicious calls and dangerous sites on your phone. Big buttons, big text.
Updated on
Aug 12, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Financial info and Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

・While the guard is on, the notice “The Guardian is on watch” now always stays in your notifications
・When you stop the watch in “Phone Guardian Ad Block”, this app now takes over the dangerous site watch on its own
Content rating
Everyone
In-App Purchases
Learn more

App support

Phone number
+81227789090
About the developer
PELLICULE
css@prbn.jp
3-5-27, IWAKIRI, MIYAGINO-KU SENDAI, 宮城県 983-0821 Japan
+81 22-778-9090