The princes made royal internet history as they appeared for a live question and answer session today.
Prince Harry had to call upon his best dance moves while visiting a centre for disabled children in Chile.
Prince Harry admitted he was "completing overwhelmed" at hearing stories of young Brazilian children, as he recalled his mother's death.
Prince Harry visited a Chilean shanty town community whose homes were destroyed by devastating wildfires on the fourth day of his official visit to Brazil and Chile.
The fourth in line to the throne even fixed a family's television.
Thousands were left homeless and 15 people were killed when the flames struck in and around the port of Valparaiso in April.
Harry was welcomed into the temporary home of three families in El Vergel, where almost all the wooden properties were destroyed leaving 100 families homeless.
Fire fighters spent two days battling the wildfires but hardest hit were the slum dwellers living in shacks built on steep hills overlooking the city.
When visiting the home of Coca Perez, 50, and her teenage son and daughter, the Prince noticed their television was not working properly.
Mrs Perez said: "He looked at it and he started to fiddle with the cable. He managed to get it working so we could watch Chile playing Brazil. Now I can tell everyone that Prince Harry is my TV repair man."
Prince George has a full round face like wartime leader Winston Churchill, according to his uncle Prince Harry.
Harry made the comments about the future King at a reception in Chile to mark the Queen's official birthday.
Virginia Araya, a presenter on national radio station Infinita, said she questioned Harry about the young royal.
She said: "I asked him what George was like. He said 'He's growing up, he is walking and he has big, chubby cheeks. He looks like a young Winston Churchill'."
Prince Harry, a self confessed big kid, found himself right at home when he played with a group of toddlers and children at a Chilean kindergarten on the first day of his official visit to the South American country.
Harry was so smitten with one of the babies he said: "Who does this little one one belong to? Otherwise I'll take him home."
The fourth in line to the throne arrived to Chile on Thursday for an action-packed three-day visit.
The Prince has met Chile's President Michelle Bachelet at the La Moneda Presidential Palace in Santiago and attended the Queen's Birthday Party at the British Ambassador's residence in Santiago.
Harry was also welcomed by special forces unit at their base outside Santiago, where he met with officers and soldiers and was briefed on their roles and military capabilities.
Prince Harry will join in the World Cup excitement that has struck Chile when he watches the nation take on Brazil today.
"I cannot finish without mentioning football - although this is a very sore subject at home - and the diplomatic challenge I face having just spent the last four days in Brazil," the royal said last night.
Prince Harry has posted a "thank you" video to the people of Brazil at the end of his tour of the country.
In the short message shot on a mobile phone, Harry said he and his team had an "unbelievable" time during the visit, and said he felt "very moved" by his meetings with the Brazilian people.
Prince Harry tried his hand at Formula One racing on his four day visit to Brazil, driving a racing simulator at the Ayrton Senna Institute in Sao Paulo.
Before leaving Brazil for Chile, Harry visited the institute founded by Ayrton Senna's family, just six months after the racing champion died in a crash at the San Marino Grand Prix 1994.
During his visit, Harry also met Viviane Senna da Silva Lalli - Senna's sister who founded the institute.
On the second day of his royal tour of Brazil, Prince Harry played goalkeeper in a spot of football with local school children.
The prince visited the Minas Tenis Clube sports club in Belo Horizonte, which will be one of the venues for Team GB and Paralympics GB's training camp during the 2016 Rio Olympics.
He also visited an outdoor swimming pool where he met Brazilian Olympic gold medalist swimmer Cesar Cielo.
Harry was later introduced to Judo athletes, including World Champion Luciano Ribeiro, before playing some basketball and meeting Brazilian rugby players.
Prince Harry will watch England take on Costa Rica in their final World Cup match later today.
Prince Harry watched the World Cup football match between Cameroon and Brazil at the Brasilia national stadium tonight.
The fourth in line to the throne was surrounded by officials at the Brasilia national stadium on the first day of his week-long visit to Brazil and Chile.