Why you need avast:

A standalone yet tightly integrated component of the avast! Mobile Security environment, avast! Anti-Theft is the slyest component on the market – because your security app should not alert potential thieves about its presence. You'll be able to remotely control your 'lost' phone by SMS at any time, with no signals indicated on the phone itself. Formerly known as Theft Aware, the Anti-Theft portion of avast! Free Mobile Security has been recommended by leading industry experts that include T-Mobile, N-TV, AndroidPIT, and Android Police.

Remote Features:

Remote Siren

Option to sound a loud siren, which returns always to maximum volume if thieves try to silence. This siren sound can also be customized (e.g. record own siren sound or select siren sound from file).

Remote Lock

To protect your data, phone can be locked remotely and then cannot be accessed again without entering the password specified by the user.

Lock Phone Settings Access

Enables remote locking of the phone's App Manager and/or phone settings.

Remote Display

Remotely send a customized message to locked or non-locked phone display (e.g. with a reward for its return).

Remote Locate

Remotely locate phone via GPS, WiFi, or mobile network – for maximum accuracy. Can locate either once or continuously (GPS can be auto-enabled on all rooted phones or non-rooted phones from Android 1.6 to 2.2).

Remote Memory Wipe

Remotely trigger a full, permanent wipe of all phone data (e.g. contacts, call log, SMS/MMS, browser history, apps, email accounts), including reliable, physical wipe of all memory cards from Android 2.2 on (limited functionality on older versions).

Remote Calling

Remotely have the phone call you elsewhere with screen blackened, so that thieves cannot see it. This way you can listen to the phone's surroundings.

Remote Forwarding

Remotely activate/deactivate option to forward or copy call data and/or SMS messages to another device. Call data goes to remote device, but not the call itself. SMS messages, however, are forwarded in their entirety ("CC" copies also to original device).

Remote "Lost" Notification

Remotely send a "Lost" command to trigger same actions as SIM card change (e.g. phone lock, siren, or USB lock). "Found" command deactivates "Lost" command.

Remote SMS Sending

Remotely trigger phone to send an SMS to another phone. That way, if you forget the phone somewhere, you can reply nonetheless to incoming calls or SMS messages.

Remote History

Query the call log, contacts, and SMS messages remotely (with each forwarded as a separate SMS message, but able to be filtered).

Remote Restart

Reboot the phone by SMS command, which will lock the phone by asking for the SIM's PIN code. (Works only on rooted phones.)

Low Battery Notification

Phone is able to send low battery notification to a secondary device.

Remote Settings Change

All of the Anti-Theft settings can be changed remotely.