The cradle that comes with the 453 is awfully small by modern phone standards. You won't be able to fit anything measurably longer than a phone with a 5.1" screen. This makes the cradle absolutely useless to us who have "phablet" type phones.
Phil's cradle was no big deal when I first got him, I had a Galaxy S7. However, now I'm using a much bigger Nexus 6P and I'm probably never going back to a small phone! Unfortunately, my Nexus will not fit in the stock cradle no matter how much I tried to work it in.
One solution would be to do the magnet phone holder mod...however in my experience, magnet phone holders cannot withstand Chicago style potholes and often will have your phone tumbling back to the floor. Likewise with adhesive based mounts, those typically do not have a very long life before the adhesive becomes useless.
A second solution would be to cut the rubber grips into a u-shape and slide the phone in. However, I change phones every 6 months to a year, making a permanent cut to the cradle is counterproductive. What if I get a thinner phone? The cradle would be useless and broken!
A final solution is to buy the nearly $200 big phone cradle from smart USA, an absurd price to pay for something that normally would cost about $20.
Instead, I looked to an invention I never decided to get a patent on for inspiration. Eureka! What if you were to make a cradle within a cradle?
I took my trusty 7 year old Scosche cradle and just stuck it into the arms of the factory cradle.
First, I hooked the "top" arm around the side of my cradle:
Then closed the bottom arms until one of them clutched the cradle:
The friction between all the pieces keep it all nice and snug! Even if I twist, it won't let go. It appears the reason for that is the top hook. It's latched onto the cradle's body while at the same time practically jammed into the arm of the Scosche mount.
Best part is that the button on the back of my cradle still works, so I can make it bigger or smaller to fit other devices. The swivel function and the onboard USB port still work too!
(Top Photo Credit: Slashgear)