Given a travel related situation, and given a specific question about the situation, summarize the question into a title
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Question: I'd like to fly to the USA at the end of January and I was wondering if my phone (Elephone P7000) supports any of the frequency bands in the USA.

I am flying to Cary, North Carolina and my phone supports dual-sim with these frequencies:


GSM: 850/900/1800/1900 MHz
W-CDMA: 850/900/1900/2100 MHz
LTE: 800/1800/2100/2600 MHz


What network will I be able to use? Which sim-card is obtainable from Germany that is useable in USA? I'll be there for three days, so I won't cause much traffic.


Answer: Using mobile internet with a Elephone P7000 in the USA


Question: I'm planing a trip between many countries in Asia. I'm not sure if it is safe carry two passports of different countries. Of course both are valid and legal. 

I'm scared to travel in poor countries with a high level of corruption and have a problem with stupid things.

If a have to choose between a Brazilian or a Portuguese which one is better? 


Answer: Travel with more than one passport


Question: I am a US citizen who will have worked for 89 days in a Schengen country while on a 90-day tourist visa.

What exactly is my best strategy at US border control? Should I admit to working while travelling, or lie and say I was on vacation?

I fully intend to declare the income earned on my taxes for this year, but I simply want to minimize trouble at the border.


Answer:
Returning to US after illegally working in the Schengen area