The majority of IP hospitals "tend" to not allow phones and laptops. Why? Well they want you engaged in working on yourself , not reading forums or keeping up on Facebook or texting etc.
Usually while IP you are kept very busy, you'll have lots of group therapy and activities to turn your mind to focus just on "you" and what you need to get back to a healther mindset, allow medications to begin to work. There are set bedtimes and you'll be getting up same times everyday.
Focus just on you and what services that you can use to find stability while there. the harder you work in IP they better you will feel coming out.
PC, Facebook and all your normal daily internet activities will still be here when you get discharged.
Just focus on you