You have a number of ways of connecting standard audio to the unit. Be aware this isn't a proper surround system at all. A proper surround system is an Audio/Video Receiver (AVR), which has industry standard connectivity on it.
This thing is a DVD player with some internal amplification and almost no standard connectivity.
Almost, doesn't mean none.
So, the connections you must focus on are the "AUDIO IN" connections, page 7 of the manual (it looks like) shows them. These are standard red/white RCA jacks.
To connect your phone, use a headphone adapter jack, then plug in a 1/8" (3.5mm) stereo to RCA cable like this one:
They are all over Amazon for under 10 bucks.
For iPhone, the Lightning to 3.5mm headphone adapter is this thing...
Not sure what/if it is sold for your specific phone.
If you want to add Bluetooth instead and do it that way, you would need a Bluetooth receiver. These are sold all over Amazon...
A bunch under $30 are out there, read reviews.
If you want to connect your TV to this unit, it doesn't appear that there is a (once again) industry standard optical audio INPUT into the unit, so you need to convert the optical audio output from your TV to RCA stereo using a digital to analog converter (DAC) (unless your TV has a 3.5mm or RCA audio output on it already... most don't).
Once again, via Amazon...
Under $20
This has RCA audio outputs on it, so you would use a RCA to RCA cable to connect to the Phillips unit...
Under $10
A lot of this functionality is built in, and will sound better, using full featured AV receivers, but those will all cost some additional money. This may get you going into the world of audio, but be aware that the unit really isn't a proper AV receiver and lacks standard connectivity and most of all standard inputs that a AVR has on it.
If you look at the back of a standard AVR, you will see that it is all about the inputs into it. Lots of HDMI connections, but also industry standard digital optical, digital coaxial, and RCA connections for a host of different devices. They also have internal features like Wi-Fi built in as well as wired networking and have internal streaming services like Pandora and Spotify available to use. But, speakers and other sources aren't included. This way you buy those devices as you need them as opposed to what someone else figured you would need.
