Why i can't register my number in yahoo mobile?

My friend moved to tennessee, && he gave me his ner number, from FB but he doesnt havea phone but he gave me his cell number, But when I try to texthim from my yahoo, an error pops up saying " oops! we do not currently support the mobile...

i want keep in touch with my bestie but for some reason yahoo messenger keeps saying that "Yahoo cant sms this number" is there anyone who can help mee? what can i do? and how? thanksz for your effort.

I tried many times to register as a Yahoo seller in its auctions but apparently, to no avail. I am using a POSB Savings Debit card / MasterCard to verify my account, but it seems that Yahoo was unable to verify it and stated that my credit card was an...

I have a yahoo phone-in, for several weeks I dont see the number anymore on my yahoo messenger bar, also when I try to make a test call from my cell phone or skype then my yahoo messenger number doesnt response, I can hear ring from the phone and also...

when am about to signed out, i want to set in yahoo mobile, so i will choose sign in my number? right? but the problem is when i started to register my number it will appear after "sorry unable to process your request at this time-- error 999. what...

i had change my phone number, so i wanted to register the new number and relplace it from the existing number.

I cant send email to my computer from my cell and I cant send email to my cell

I have her on lease and the owner has the wrong papers. I want to buy her so I joined Studbook and found out her brand register number and some lady's name, but no other details. How do I find out what her breeding is with no contact details. Any help...