The Nexus 5 lure got a little bit more irresistible over at T-Mobile as the U.S. telco started offering the first KitKat 4.4 smartphone with no cash out and packed the deal with a monthly fee of only $16.50.

As usual, the contract last for two years so buyers of the 16GB variant will end up getting the Nexus 5 for a total of $396.

Checking on Google Play Store, the same model still sells for $350 or $40+ cheaper than the T-Mobile offering. However, the actual savings rest on T-Mobile's virtually free network service that is spread out for the life of the deal.

Essentially, buyers will not be paying for the gadget at all, only the voice and data access for the next 24 months. Note, however, that the cost of ownership could go higher depending on use of network service.

And one giant bonus is the assurance that subscribers will not paying a dime after signing up unlike in Play Store where payment is required first before the shipping procedure is set in motion.

But the whole beauty of the deal doesn't end there, according to Droid Life. It appears that the same Nexus 5 package is part of T-Mobile's ongoing switch attraction, in which the company would pay up $650 for customers who apply for a line and surrender a fully-working smartphone.

In the payment, $300 covers the cost of the gadget to be swapped, preferably of the upscale kind such iPhone 5S from Apple or Galaxy S4 from Samsung, while the remaining $350 will compensate for the clients' early termination fee to the telco that they plant to ditch.

So even if Google's Nexus 5 pricing is lower than that of T-Mobile's, the long-term savings to be realised from the latter is reason enough to quickly jump on the deal.

Since its release in Q4 2013, the LG Nexus 5 is proving itself as one mighty contender to withstand the double-whammy smartphone juggernaut that comes from Apple and Samsung.

The device's 4.9-inch True HD IPS LCD screen dwarfs over the 4-inch iPhone 5S and gives quite a good fight when pitted against the 5-inch Galaxy S4 that boasts of a Super AMOLED Full HD display technology.

Under the hood, the Nexus 5 is powered by a quad-core Snapdragon 800 chip that hums mightily at 2.3GHz with 2GB of RAM. Part of the muscle chip is an Adreno 330 GPU that fires up the handset's 1080p screen resolution.

Running the whole Nexus 5 show is Google's native and latest Android KitKat 4.4.2, which should have been chewed down by most units in circulation or would be absorbed shortly as the case for new buyers.