The NSA can get into any equipment. Remember that when Apple asked the FBI director if they had approached the national security agencies, he replied, 'Yes, we have asked.'. But he did not say what the response was.
The FBI will be trying to make this a political case to go after the phone manufacturer again. But the case is not about this POS; it is about our rights to not have our personal records open to government spying. The government wants to spy on us in every way possible.