If you are using a Mobile. You can make an FB account on that Mobile.
You want to have a Browser to create an FB Account on Your Mobile.
Open the Browser That is your lovingly.
I suggest before reading this article you have to read this article Facebook Account is Required to Create.

The Five(5) Steps to Create Facebook Account easily.


1 opens the Browser and Type  the Facebook (www.facebook.com)

then tap on Create New Facebook Account
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It asks you, What's Your Name?
Enter your First Name and Surname, then tap Next Button.
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2 It asks you, What's Your Birth?
Note: Enter your Date of  birth (who creates FB account he?she should have 13 years old) then tap on Next Button
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3 It asks you, What's Your Gender?  Confirm your Gender on radium options Male or Female. then tap next Button
 
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4 It asks you, Enter Your Mobile Number
   Firstly choose your country. then Enter Your Permanent Mobile Number

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5 It asks you, Choose password? The Final Step is Choose a Password. it is at least 8 characters. it's maybe letters and numbers symbols whatever it maybe you have to choose a password to log in next time, then hit on Next button
           
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To Complete your Account Creation you have to confirm your mobile number(by OTP) or Email (by just clicking the sent link by Facebook)