If you often go to other countries and worry that the phone can not be used, then the global version of the phone is the best choice. Ulefone recently released two global version of the phone --- Ulefone T1 and Ulefone Armor 2, both of which are very suitable for you ,but they have own features.
ulefone t1
Ulefone T1 and Ulefone Armor 2 both equipped with MTK Helio P25 processor and has 6GB 64GB storage,and install Android 7.0 OS.But if you are worried that your phone is not anti-wrestling ,the best choice phone is Ulefone Armor 2,which is IP68 waterproof,dustproof and shockproof.Otherwise ,you can choose Ulefone T1.

In fact,Ulefone T1 is more similar to Ulefone Gemini pro,Ulefone T1 also has the dual rear cameras ,which has 16MP+5MP rear camera and 13MP Front camera.And it also has Black color and red color two options.And for the battery,they both have 3680mAh Li-Polymer Battery and support quick charge.If you get the two phones,You may not be able to correctly identify them.

So,if you want to buy a global phone with a dual camera,you can buy ulefone T1.But if you want to buy a large battery phone,Ulefone also have a phone that is suitable for you,which is ulefone power 2,that has 6050mAh battery,so Ulefone can meet your needs for mobile phones.