All smart phones work on and with software. This software can be malfunctioning due to malware and viruses. If it happens so you need to consult a service provider whose team is well versed in the software doctoring. We are waiting for your call at 04 4211494 if your iphone 6 plus is not responding according to your instructions or becoming slow in response. Our collection crew will rush towards your request and collect the phone for technicians. They will enable the phone to return to you as soon as possible depending upon the nature of software fault.