How to travel to another country, with a travel size Wi-Fi router?

So I have Sprint, an iPhone 6 to be specific. I'm going to Mexico for 3 weeks, is there any way I can buy a Wi-Fi router which I can carry with me at all time and only use Wi-Fi, and have my iPhone on airplane mode.

You can't use Wi-Fi when in airplane mode.

You don't need to carry a router to use Wi-Fi on an iPhone.

What do you want to use Wi-Fi for. If the iPhone is in airplane mode, it won't connect to anything and won't make or receive phone calls or texts. If you are not carrying at least two Wi-Fi devices (or at least one Wi-Fi and one Ethernet) which are not in airplane mode, then a wireless (Wi-Fi) router on its own is useless.

I assume you want an Internet connection. That's what an iPhone should provide. Use the iPhone and turn on its hotspot facility if it has one. If it doesn't have a hotspot facility, change to a decent Android phone with a hotspot facility. This can provide Internet access with the correct SIM card and Wi-Fi for other devices. No need to splash out on a router.

If your iPhone is network locked, then you might want to get it unlocked, and possibly buy a Mexican PAYG SIM card while you are there.

From the tone of your question, it sounds as though you think Wi-Fi on its own provides Internet access. It doesn't. You need some form of ISP connection either wired to an ISP or accessed over a cellular phone network.

Yes you can carry it with you. Make sure you have a 1000 mile cable also so you can keep it connected to your internet service too.

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