Why are manufacturers denying their users the insurance policy of a safeguard against dropping their phone, or having it knocked from their hand? Doesn't make sense to me.
My previous phone: the HTC HD2 was no exception (no fixing holes) but I was able to get around this limitation by attaching a strap to a loop of duct tape under the battery cover, as demonstrated in this video:
the Nexus 4 likewise has no wrist strap option but also alas! no battery cover so the HD2 hack won't work. the only option left is to fit a slim hard case and attach the strap to that, altho. most hard cases, like the phones seem also to regard wriststraps as passé. There is one hard case that I've found that does have the holes to allow the fixing of a wrist strap: the "Rearth Ringke Nexus 4 Slim", but it's a premium priced case, and currently hard to get in the UK.
I decided to go instead for a cheaper DIY approach. The cheapest hard case that i could find on ebay UK was one by e-cell: "PROTECTIVE SNAP-ON HARD MATT FINISH BACK CASE COVER FOR LG NEXUS 4 E960" #200876235150 @ £2.65 with free shipping.
It's a nice case for the price with a non-slip surface; stiff and not too bulky, it fits the phone tightly but as expected doesn't have the holes. I was however able to drill my own with about 1 minute's work using a dremel. I was careful to leave a generous gap between the 2 holes i drilled so as not to overstress the case material. I also made sure the holes were in a "corner" so that the wristrap would not obstruct the fit of the case.
Here's the result. I'm very pleased with it. Unfortunately the only colour that they don't supply is my preferred black! but the red is growing on me.