No - companies don't charge you to receive calls or texts.
Yes, unlike the traditional land line phone companies which always charged the originator of a call and never the receiver, with the exception of collect calls and calls to 800 and other toll-free numbers, mobile phone companies charge both. Even calls to "toll-free" numbers are billable when made from a mobile phone. And even if you don't answer, you get billed when the call goes to voice mail. I don't know what the case is for incoming calls to numbers that don't have voice mail set up to receive calls.
A toll-free number has no long distance charge associated, but calls from a mobile phone (cell phone) will still incur airtime charges, the same as local calls.
There are many mobile phone carriers that provide free calls to residential phone numbers, such as Vodafone who has numerous deals such as the Vodafone Alltime that gives you free residential calls. Other companies that also do this deal includes TPG, Telstra and Virgin mobile.
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This is the list of operational Mobile phone connection companies in Pakistan:UfoneTelenorMobilinkInstafoneWaridZong
The cheapest phone plan for you will depend on what time of day you make or take calls, if you use text messaging, and so forth. Virgin Mobile is known for its low rates but the only way to determine if it is the cheapest plan for you is to define the calling package you want and price it out at various mobile companies.
Private calls are detected on a mobile phone on caller id as private or blocked. They may also appear on a mobile phone as "unknown."
Is such a thing possible... but satilites send signals to your phone
When you are charging the phone, it will often light itself up to indicate that the charge is complete. Some phones light up as a reminder of missed text messages or phone calls.
Just that - incoming calls. When someone calls your mobile phone number, this also eats up your 'anytime' minutes during peak use times.
There are various websites which allow you to compare mobile phone plans and companies. One such website is http://www.moneysupermarket.com/mobile-phones/ where they give a listing of competing companies and plans!