First of all make sure that some others have access to your phone.
In this case, as per hint in your question, he may be using some parental control software. Net Nanny, Norton family, Safe kids etc. are some of the most widely used parental control software. If you happen to see them in your phone, you uninstall them.
Explore your phone apps and identify any unfamiliar app or programme which you have not installed and uninstall them. Scan your phone with a good security software. In case you do not find any such snooping or spying software, then you have to take note of some signs which may indicate that your phone is accessed or spied from remote.
Some of the physical signs which give suspicion of your phone being accessed by others are below:
1.Phone becomes hot even when you are not using it.
2, Monitor your data usage . Restrict background data usage by apps. Then, if you see high data usage even though you don't use much data then it may be indication that your phone is used by someone remotely.
3. Your phone has some issues when shutting down.
4. Indications of SMS which you did not send or receive.
5.Any other erratic behaviour of your phone without any valid reason known to you.
How to remove the spyware from your phone.
1. Use phone security software programme.
2. You may try with the free versions of the popular software like, Kaspersky Internet Security, Avast Mobile security, Norton anti virus , Bitdefender etc.
3. Scanning by these software will show the malware or spyware and may delete it automatically and may solve your problem.
If you are using iPhone,
1. view your apps and remove any unknown, unfamiliar app that you have not installed .
2. 2. Go for updating your phone system.
If these common methods do not work then the next is Factory reset your phone. But this has its own risk. You may lose your needed dat. So you may take a back up of the needed files and data before going for a factory reset. But then it may be dangerous to restore the same back as the back may also contain the spyware programme.
Protection and Precaution:
1 Install and keep update a good mobile security software. Scan your phone periodically daily if possible or set the auto scan.
2 Don't allow unverified apps to be installed
3 Install 'app notifier' to let you know if any app is being installed( in case you envisage spying risk)
