Signal Private Messenger

by Signal Foundation

4.5 ★ 2.8M+ reviews
198M+ Installs
05/25/2010 Released
Signal Private Messenger icon
Signal Private Messenger icon
Communication

Signal Private Messenger

by Signal Foundation

4.5 ★ 2.8M+ reviews
198M+ Installs
05/25/2010 Released
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Signal Private Messenger screenshot 1
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Ratings Breakdown

4.5 ★★★★★ 2.8M+ ratings
5 ★ 76%
4 ★ 12%
3 ★ 4%
2 ★ 2%
1 ★ 5%

Data from Google Play at the time of writing.

What Signal Actually Is and Who It’s For

Signal is a free messaging app built by a nonprofit, the Signal Foundation, with a singular focus on privacy. It handles texts, voice messages, photos, videos, GIFs, and files over your data connection instead of SMS, plus encrypted voice and video calls with group call support for up to 50 people. Group chats scale up to 1,000 people with admin controls, and there’s a Stories feature for 24-hour disappearing content. It’s aimed at anyone who wants a WhatsApp or Messenger alternative that isn’t owned by a big ad-driven tech company.

Where Signal Genuinely Delivers

The core promise holds up in real use: end-to-end encryption by default, an open source protocol, and no ads or data collection since it’s not funded by investors. Reviewers repeatedly point out that it’s not owned by Facebook, Google, or similar companies, and that texting, voice, and video all work in one app for free. For people who specifically want a messenger that isn’t monetizing their data, this is the main draw and it’s delivered consistently.

The Notification and Calling Bugs That Frustrate Users

The most common complaint in real usage is that calls simply don’t ring, even with notifications fully enabled and the phone in full ring mode, which causes missed calls and real frustration. Others report that incoming calls fail to vibrate when the phone is locked, and that switching between front and back camera during a call is unnecessarily fiddly. Message delivery has also been flagged as inconsistent, with some users needing to send several messages before one goes through, or waiting anywhere from minutes to nearly an hour for a message to land even on the same wifi network.

Account Recovery and Data Requests Raise Concerns

Several users are uneasy about newer requirements, like needing location access to transfer an account to a new phone, which feels at odds with a privacy-first pitch. Losing the app accidentally also means losing your account with no easy way back, though users note the developers are reportedly working on this. There’s also friction around donation prompts: the app now asks for contributions tied to features like backups, which some longtime users find odd for a company that doesn’t store their data on its own servers.

Small Annoyances Worth Knowing About

Signal requires a phone number to create an account, and you can’t discover or search for public groups, you can only be added by invitation. Repeated in-app rating prompts and reminders that Signal is a nonprofit are common enough that multiple reviewers mention docking a star specifically because of that repetition. A ‘Mark as Unread’ feature is also missing, which matters for anyone who skims a message and wants to circle back to it properly.

Final Verdict on Downloading Signal

Signal remains one of the few messaging apps that genuinely backs up its privacy claims with open source encryption and nonprofit ownership, and for privacy-conscious users that’s enough to outweigh the rough edges. But the calling and notification bugs, inconsistent message delivery, and newer account recovery friction are real issues that show up often enough to matter. If reliable ringing and instant delivery are non-negotiable for you, go in aware of these reports; if privacy is your top priority, it’s still worth installing.

Pros

  • ✓Strong end-to-end encryption by default
  • ✓Free, nonprofit, no ad tracking
  • ✓Handles text, voice, and video calls
  • ✓Open source Signal Protocol
  • ✓No ownership by big tech companies

Cons

  • ✕Calls sometimes don't ring properly
  • ✕Message delivery can be inconsistent
  • ✕Losing app can mean losing account

What Real Users Say

Dave Krieger ★ 5/5

“It's encrypted end-to-end by default. It's free (made by a nonprofit). It's not owned by FB, G, or any other big ad pusher. And it does text, voice, and video. (Missing feature: "Mark as Unread"; I find I often take a quick peek at a message and find that it requires a lengthy reply that I didn't have time to…”

👍 5,610 found this helpful
Kaishi Axon ★ 5/5

“good app, but asked for a rating. I'll let it pass the first time but it's minus 1 star each time after that. things to know: -it requires a phone number to make an account. -signal is a not-for-profit entity or some kind, they will remind you repeatedly. -you can't find groups, only be invited to them via a link.…”

👍 2,826 found this helpful
Alice Marbach ★ 3/5

“Love signal! however I've noticed a bug to PLEASE FIX♥️: the calls do NOT ring, even with notifications on in the app, and in settings, and the phone in full ring mode. it's very frustrating because I keep missing calls. DEVELOPERS, PLEASE FIX AND I'LL BE VERY VERY GRATEFUL. i use it for a lot of my messaging and it's…”

👍 882 found this helpful

Reviews sourced from Google Play, selected by helpfulness at the time of writing.

App Info & Permissions

Developer Signal Foundation
Content rating Everyone
Contains ads No
In-app purchases $1.99 per item
Installs 198M+
Released 05/25/2010
Price Free

Permissions this app requests

📷 Camera Take pictures and videos
👥 Contacts Find accounts on the device; read your contacts; modify your contacts
📱 Device ID & call information Read phone status and identity
🪪 Identity Find accounts on the device; read your own contact card
📍 Location Approximate location (network-based); precise location (GPS and network-based)
🎙️ Microphone Record audio
📞 Phone Read phone status and identity
🖼️ Photos/Media/Files Read the contents of your USB storage; modify or delete the contents of your USB storage
💾 Storage Read the contents of your USB storage; modify or delete the contents of your USB storage
📶 Wi-Fi connection information View Wi-Fi connections

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Frequently Asked Questions

1

What is Signal Private Messenger?

Signal is a free messaging app developed by the Signal Foundation, a nonprofit, that focuses on end-to-end encrypted communication. It supports text, voice messages, photos, videos, GIFs, files, and encrypted voice and video calls, including group calls for up to 50 people. It also offers group chats for up to 1,000 people and disappearing Stories. The app uses your phone's data connection rather than SMS or MMS.

2

Is Signal free to use?

Yes, Signal is completely free and supported by donations rather than ads or investors, since it's run as a 501c3 nonprofit. There are no subscription fees to send messages or make calls. Some users note the app occasionally asks for donations tied to newer features like backups, but core functionality remains free.

3

Why won't my Signal calls ring on my phone?

Multiple users report a bug where incoming calls don't ring even with notifications enabled and the phone set to full ring mode. This appears to be an ongoing issue rather than a one-off problem, and it has caused users to miss important calls. There's no confirmed fix mentioned by users yet, so it's worth testing this before relying on Signal for calls.

4

Do I need a phone number to use Signal?

Yes, Signal requires a phone number to create an account, which is a common point of confusion for privacy-focused users expecting a fully anonymous setup. You also can't search for or discover public groups, since you can only join groups through an invitation. This is a deliberate design choice tied to how Signal verifies accounts.

5

What happens if I lose or delete the Signal app?

Based on user reports, accidentally deleting the app can mean losing your account entirely, since account recovery hasn't historically been straightforward. Some users mention that the developers are reportedly working on improving this. Until that's fully resolved, it's wise to be cautious about uninstalling the app or switching phones without backing up properly.