Can basic cell phones with no internet be hacked?

[LizBeth]

I recently received two text message from short code numbers.  When I tried to open them they either installed or tried to install something into my phone.  Can hackers get into a phone like mine this way?  Thanks!

[xray · Accepted solution]

If you have a feature phone (not iPhone or Android) then you are safe.

It's not a good idea to click on links in messages if you don't know what it's for.

[LizBeth]

I just opened the email, I didn't click on anything other than that.