Troubleshoot Troubles with my Android

[floalma]

Hi,
I have Android v7 installed on my mobile phone.
When typing a sms, from time to time, I can see that display others characters and emoticons I didn't type. Then, the mobile automatically was trying to make a photo several times and even call from contact list. It's like someone took the control of my mobile phone.
Wifi is off and mobile data is off by default. Moreover, I've never connected this mobile phone to Internet.

Do you have an idea ? Do I need to install an AV apps ? I would appreciate any valuable recommendations, thank you

 

[Protomartyr]

Have you installed any apps recently?

If you open up the Play Store, and go to Play Protect in the side menu, does it give you any notifications of any malicious apps?

 

[Paul Lee]

Where was this phone purchased and how long ago? If you bought it from a person, they could have modified the operating system in some way

 

[Handsome Recluse]

Can't you reset your phone?

 

[roger_m]

It sounds like a faulty phone.

 

[floalma]

I didn't install any apps recently.
I bought this phone to a person, it's a Geotel.
I don't know how to make a reset but I would need to back up my datas and how to do it ?

 

[Venustus]

I didn't install any apps recently.
I bought this phone to a person, it's a Geotel.
I don't know how to make a reset but I would need to back up my datas and how to do it ?

I've never used that phone myself,but does this help?

How to reset Geotel A1 - Factory reset

How to reset Geotel A1. Factory reset to factory settings A1. How to reset device from settings. Erase or format. Wipe data

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