I think first we need to understand what teenagers ( and most of the other people) do on mobile devices. And then why do they do that. Broadly two things are major.
Games - To get a sense of win, awards etc
Social Media - Communication, praise, and appreciation.
We need to come with health-oriented apps that can fulfill that combination. Fitbit does it up to a level. Also, IoT can play a major role. For example- there are fitness instruments which are connected to internet and cloud. A mashup of all these can be one alternative. 

M-Health applications incorporated/installed in typical intelligent mobile, wearable, and ambient device applications for behavioral health care has high impact on (i) healthcare monitoring and alerting systems, (ii) record maintenance, (iii) clinical and administrative data collection, (iv) healthcare delivery programs, (v) medical information awareness, (vi) detection and prevention systems, (vii) drug counterfeiting and theft. Due to their inherent mobility functionalities, it will bring the heath care in patients and doctors hand. In other words, both physicians and patients get easy access to relevant data, such as reports, images, drug information, easy contact using mobile devices anywhere.

Some uses of mobile health care
Mobile health technology/apps can support the guidelines are reported related to (a) glycemic control and self-monitoring of blood glucose, (b) pharmacological approaches and medication management, (c) medical nutrition therapy, (d) physical activity and resistance training, (e) weight loss, (f) diabetes self-management education and (7g) blood pressure control and hypertension, (h) ECG by mobile technologies.

Potential advantages of mobile health care

•  Large-scale clinical studies that utilize electrocardiography are easier to conduct using mobile technologies and the collected data are suitable for “big data” processing.
• There may be positive aspects to using mobile technology at the bedside.
•  Apps enhance access to current evidence.
• Mobile technology enhances student teacher contentedness.
• Mobile technology is particularly useful in remote areas for both learning and care delivery.

Future Research required
Although mobile technology has immense potential for personalizing patient care by providing phone apps that give clinicians more detailed information and data, easy accessibility to patients, there exists high demand for developing proper evaluation framework, which can only be achieved through extensive research. 

I specialise in finding people's motivations, and in allowing them to develop fresh motivations where there is none. The best tool for this is neurolinguistic programming. We can use NLP to wean people, not just young people, off their mobile phones and tablets out in public.

It starts by stopping using labels. "Millennials." "Gen Y." If you believe them to be people, your plans will be more effective.

Mobile technology for health has revolutionized how we access healthcare, offering tools for remote monitoring, telemedicine, and managing personal health data. This technology makes healthcare more accessible and efficient. On a different note, when it comes to cosmetic treatments, too much filler in cheeks can result in an unnatural, overfilled look. It's important to work with an experienced professional who can ensure that filler is applied in moderation for a natural, balanced appearance.

Mobile technology is revolutionizing healthcare by enabling remote monitoring, telemedicine, and health apps. Wearable devices track vital signs, providing real-time data to healthcare providers. Mobile health cox internet provider apps allow users to manage conditions, schedule appointments, and receive personalized advice. These advancements improve accessibility, reduce healthcare costs, and enhance patient engagement, ultimately leading to more efficient and effective healthcare delivery.