Singapore Airlines is offering passengers sick of being stung by global roaming charges the opportunity to use free pocket Wi-Fi routers while visiting its home city over the next year. The airline has teamed up with DataPro Technologies to allow eligible Singapore and SilkAir customers who are 16 years and older to stay connected on a secure 4G Wi-Fi while exploring Singapore. The free three-day, two-night WiFi comes with complimentary 2GB of data and each hotspot router has 12 hours of battery life and can support up to five mobile devices. READ: Virgin to add "fly now, pay later" option. Those on longer stays can extend up to 10 days and 50GB of data for $S12,  eight euros or $US9 weekly. Visitors can use the Datapro device as a personal hotspot and the company says the network is fast enough to make video calls, watch you-tube or stream movies. But undoubtedly the most useful apps for visitors will be those that allow them to find their way around, check e-mails and post their adventures on social media. SIA recommends customers can pre-book their WiFi devices online before their travel date at www.singaporeair.com/free3d2nwifi. Once they’ve done this they can proceed directly to the hotspot station at Crowne Plaza Changi Airport hotel with their SIA or SilkAir flight booking reference number to redeem their free 3D2N WiFi. Customers without bookings can also do the same but this will be subject to availability on a “while stocks last “ basis. The WiFI devices must be returned to the hotspot station at Changi upon departure and the airline notes it will disclose personal data to DataPro Technologies in accordance with its privacy policy.