Speaker phones not working iPhone 4S

Do the basic troubleshooting steps described in the User Guide, Appendix B:  Restart, Reset, Restore using a backup, Restore as new, without using a backup.  If Restoring as new doesn't help, there surely is a hardware failure.

If you have a hardware failure, there is NOTHING we can suggest that will magically fix it.  Taking it to an iPhone service center is your only option.  The warranty is valid only in the USA and the phone has to be brought in to Apple by a person - you can't ship it directly to them and Apple won't ship it back to you out of the country.

Do the basic troubleshooting steps described in the User Guide, Appendix B:  Restart, Reset, Restore using a backup, Restore as new, without using a backup.  If Restoring as new doesn't help, there surely is a hardware failure.

If you have a hardware failure, there is NOTHING we can suggest that will magically fix it.  Taking it to an iPhone service center is your only option.  The warranty is valid only in the USA and the phone has to be brought in to Apple by a person - you can't ship it directly to them and Apple won't ship it back to you out of the country.

Thanks for your quick response.

I have done the 'Restore as new' and the problem still persist. This is why I also believe it's a hardware failure.

I am resident in Nigeria, but it was bought in the US. What option do I have if I have to pay for shiping 'to and fro' back to the US, do you think it will help? If you know any other option that can help, kindly help with it. Many thanks. I am really sad about this.

Thanks for your quick response.

I have done the 'Restore as new' and the problem still persist. This is why I also believe it's a hardware failure.

I am resident in Nigeria, but it was bought in the US. What option do I have if I have to pay for shiping 'to and fro' back to the US, do you think it will help? If you know any other option that can help, kindly help with it. Many thanks. I am really sad about this.

Your ONLY option is to ship it to someone you know in the USA.  That person will have to take it to Apple for warranty service/replacement and then ship it back to you.  Apple won't accept a shipment from or ship to anyone outside the USA.