Signal

Signal is a privacy-oriented chat software, mainly serving the United States, Europe and other countries that emphasize user security and privacy. It can not only chat, but also clean up cell phone trash, test WIFI signal strength, and measure the speed of websites. signal automatically encrypts all text messages, and you must enter a password to query messages. In addition, the software will not track your message records or other personal information.If you like it, come and try it!

Functionality

-Call friends via clear, encrypted voice and video calls, with support for group calls of up to 40 people.

-Keep in touch with group chats of up to 1,000 people and control who can set up and manage group members using administrator privileges.

-Share photo and video stories that disappear after 24 hours; privacy settings allow you to control exactly who can view each story.

-Signal is built for your privacy, we know nothing about you or who you are talking to.

Bright Spot

Data minimization: the application collects only a very small amount of user data and the server does not store the content of the messages.

No ads: Signal does not contain ads and does not have any trackers.

Blocking screenshot function: You can restrict the screenshot of the chat interface.

Customized notifications: Users can set independent notification tones and preferences for different contacts.

Message Editing and Withdrawal: Supports withdrawal of sent messages or editing of message content within a specific period of time.

Anonymous registration option: register by phone number, but you can hide your real number (settings need to be enabled).

Group Function: Support large group chat, provide permission management and broadcast message function.

Fast multimedia sharing: Supports high quality sending of images, videos, GIFs and files.

Rich emoticons and stickers: users can create and use customized sticker packs.

Privacy Keyboard: Enabled on some devices to prevent the keyboard from recording sensitive inputs.

Video and Audio Messaging Support: Supports sending real-time recorded voice and video clips.

No third-party dependencies: does not rely on any big tech company's cloud services and runs completely independently.

Group Link Invitation: Invite people to join a group by sharing a link to avoid disclosing the number directly.

Low Data Usage Mode: for users with low bandwidth or limited data plans.

Proxy server support: network restrictions can be bypassed through proxies for censored areas.

Common Problems

Is Signal completely free?

Yes, Signal is completely free to use and is supported by the Signal Foundation, which maintains operations through donations.

What if I change my cell phone number?

Accounts can be migrated via the Change Number option in Signal Settings.

Why are messages delayed or undeliverable?

It may be related to an unstable network connection or a device power saving mode interfering with notifications.

Does it support dual device use?

Yes, one phone is supported to synchronize with multiple desktop devices, but multiple phones are not supported to log in at the same time for now.

The message disappeared, can it be restored?

Disappearing messages cannot be recovered, make sure important information is backed up or stored before it expires.

What is the group limit?

Signal groups support up to 1,000 members.

Can you block contacts?

Yes, contacts can be blocked via the chat screen or settings.

Does Signal charge for calls?

Calls are made using an internet connection, regular data charges apply, but the application itself is not charged.

Why didn't I get the verification code when I registered?

This may be due to network problems or carrier blocking, so we recommend checking the SMS service or trying the phone voice verification code.

Does Signal support cloud backup?

Traditional cloud backups are not supported, but can be locally encrypted to device storage.

How do I protect my apps from snooping?

PIN code lock or biometric unlock can be enabled.

Does it support translation function?

Signal itself does not provide a built-in translation function, but users can copy text to the translation tool for use.

How do I log out of a group?

Select "Exit group" on the group information screen.

What is the size limit for sending files?

Individual file size is limited to 100MB.

Is Signal more secure than other messaging programs like WhatsApp or Telegram?

Compared to WhatsApp and Telegram, Signal offers stricter data privacy protection and a fully open-source encryption protocol.