What is Wi-Fi calling? How do I setup Wifi calling on my Sprint phone? Can I call over Wifi on my Sprint phone.

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Fee: Up to $30/line. Credit approval req.

EBill & new acct. Sprint Unlimited Freedom Plan: Incl.

Unlimited domestic calling, texting & data. Free Debugbar License Code Programs here. Third-party content/downloads are add'l.

See sprint.com/globalroaming. Plan not avail. For tablets/MBB devices. AutoPay: $5/mo.

Discount may not reflect on 1st bill. Quality of Svc. (QoS): Customers who use more than 23GB of data during a billing cycle will be deprioritized during times & places where the Sprint network is constrained. See sprint.com/networkmanagement for details.

Usage Limitations: To improve data experience for the majority of users, throughput may be limited, varied or reduced on the network. Sprint may terminate svc. If off-network roaming usage in a mo. Exceeds: (1) 800 min. Or a majority of min.; or (2) 100MB or a majority of KB.

Prohibited network use rules apply --see sprint.com/termsandconditions. Hulu: Reqs qualifying Sprint service plan and registration of Hulu account from Sprint phone while on the Sprint network at hulu.com/sprint. Access to one Hulu Limited Commercials plan per each eligible Sprint account (excl. Other Hulu plans and add-ons) while eligible Sprint plan is active and in good standing. Tablets may stream Hulu content via included Sprint Hot Spot or may subscribe to separate unlimited data plan for tablets. For phones and tablets on a metered plan streaming will pull from monthly allotment.

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A Wi-Fi network can place calls when you're trapped in an area with spotty phone signal. James Martin/CNET One of the main draws of phone networks that integrate Wi-Fi technology like 's and -- in addition to offering customers a cheaper alternative to regular phone plans -- is they will seamlessly switch your phone service between cellular and Wi-Fi when needed. Wi-Fi calling is nothing new. Apps such as, and make it easier to use a phone to place calls and send texts over the internet and forgo mobile networks altogether. Carriers are also adopting Wi-Fi calling themselves. Whether it's because they want to bolster their network coverage or improve user experience, several networks have that have this service baked in. To help you make sense of what Wi-Fi calling is, why it's important and what you can use it for, CNET put together a handy guide to walk you through everything you need to know.