How do you know if your 32GB version has the HSPA+? I'm a bit confused, please enlighten me.
It'll specifically say "+mobile with HSPA+" or something to that effect.
HSPA+ is a cellular technology, basically 4G. Not to be confused with 4G LTE, which is faster but requires different hardware depending on country. It was easier and cheaper to do HSPA+ rather than 4G LTE.
It's pentaband and unlocked, so it'll work worldwide with any GSM carrier.