Transcript for Teen gets phone back during trip home from treatment: Part 4
Reporter: Soaring through thin air, these majestic Utah mountains offer a breathtaking vista. But down in the desert dirt, 14-year-old Josh is still trying to catch his breath. I would think that initially in the first few days, it's just about learning life skills. Reporter: Mckay deveraux is executive director of outback therapeutic expeditions. It'ly the first several weeks in which they're learning to take care of themselves. Reporter: Josh is enrolled in a treatment program called unplugged. The organization waived his fee, which can run tens of thousands of dollars, hoping to raise awareness of this problem. If the boys want to survive, they will have to change their lives. What does that have to do with gaming or anxiety or depression? Being able to kind of reset everything neurologically and mentally by taking them away from all the distractions of their typical life. Reporter: After Josh has been in the wilderness for more than seven weeks, we go for a visit. I'm Elizabeth. It's very nice to meet you. All right, so show me around your camp. Reporter: Josh shows me how he and the other boys live. Carrying their few belongings in a homemade backpack, building shelter, preparing meals, nothing gourmet. Out here peanut butter is a delicacy. Josh wanted to show off his new fire making skills. You do it right here? Yeah. Reporter: With disappointing results. Pretty close. We'll practice again later. Okay? Reporter: How is that going to help you in life, do you think? I can use it as an example as like my anxiety. At first it was super hard for me to hike. Reporter: Learning to overcome physical challenges here is a lesson Josh can take with him and apply to life challenges back home. So you're learning to push yourself? Yeah. My issues is that I had gaming addiction because I had anxiety and depression, and basically I'd just use it as like escaping from it. Reporter: Are you worried at all about going home and falling back into your old habits? Yeah, like, I've had dreams at night where I'm just playing video games and then it's just kind of scary when I wake up. Reporter: There's another milestone for Josh here on the mountain. He's turning 15. A birthday to remember. Unlike Josh, Chris is facing his gaming problem right at home in Ohio, but there are still mountains to climb. I don't make it down here much. It's just kind of a place for the kids to play right now. Reporter: Visiting his former gaming closet triggers intense emotions. I freaked out about it. I remember kicking my couch. Reporter: Watch Chris' reaction to those empty shelves. The games were here and surprise, the games were gone. I was just tight in the chest. It's a little tough to think about even now. I mean it's making me feel some feels right now. Reporter: He documents his struggle to stay out of the game. Day by day. Day two of this 90-day detox, boredom, monotony, agitation. Reporter: Week by week. It is amazing. This probably is the first week game free in years and years. Reporter: MARIA assumed without games, Chris would spend more time with her and the kids, but at least for now, he has intensive therapy. It's taking up four hours nearly every day. I was kind of hoping that he would at least attempt to, when he's with us, be with us. But I wonder if right now it's just a little too much for him with the anxiety level. Reporter: And although the games are locked away in a storage facility, he admits they still seem to have a hold on him. It's gray and cold and rainy and wouldn't it be nice just to head downstairs and just play some freaking video games. Reporter: It's been nearly 20 months since Brooke first arrived at her treatment facility. We want to start off with some pretty tight limits and structure around your phone use. Reporter: Periodically, Brooke is allowed to go home for visits. The trips are a test. Brooke's phone, normally locked away, is handed over. This is the first time she's had it since she got to go home last time. Brooke, how long has it been? I'd say probably a month and a half. How does it feel to have it back? It's really exciting, because I miss talking to my friends, and so it's exciting that I get to do that again. Reporter: Brooke's mom, Stephani is going to the airport to meet her. I'm always hopeful, I'm hopeful every time that she comes home. But I'm also realistic, and I know that it's, it's a real struggle for her. Okay, so Brooke looks like she has landed. Oh. I didn't even see, I thought she was part of the flight crew. So good to see you. Reporter: There's been a loss of trust in this family and Brooke's parents take precautions. Out of sight, out of mind. We have a drawer here that we just keep some of our old devices in. We kind of keep these hidden while she's here. Remember these? Oh, yeah. Reporter: Most of the visit is going smoothly. Paging through old memories of life before the crisis. Watching home movies. But at night, when Brooke has to hand over the phone, it's hard. Her painful past comes rushing back. She's feeling like the only teenager in the world who can't handle a phone. I guess I just feel really left out and when I have the phone, I can at least talk to people and feel like I'm fitting in still. It just makes me feel like I'm missing out. Reporter: Even with all the improvement and all the progress you've seen her make, it isn't all better. No, it's not. No. Reporter: That's still an issue, what social media does and allows kids to access and be vulnerable to. Yeah. It's a lifelong journey for her. There will still be highs and
This transcript has been automatically generated and may not be 100% accurate.