Mobile vs Landline Calling Strategies

Key Differences

Mobile Number Strategies

Call Timing

Mobile users check their phones constantly but screen calls. Best windows:

• 11am-1pm — Lunch break, more likely to answer personal
• 5pm-7pm — After work, before dinner
• Avoid — 9-11am (work focus), after 8pm

Local Presence Dialing

Mobile users heavily screen unknown numbers. Local area codes answer 30-40% more:

• Match caller ID to recipient's area code
• Use dynamic number pools by region
• Maintain reputation on local numbers

SMS Integration

After unsuccessful calls, follow up with SMS:

• Introduce yourself before calling again
• Provide callback option
• Requires consent and 10DLC registration

Landline Number Strategies

Call Timing

Landlines are more likely to be answered during home hours:

• 6pm-8pm weekdays — After work, during dinner
• Saturday 10am-12pm — Weekend morning
• Avoid — Weekday work hours (unless business line)

Household Dynamics

Landlines may be answered by anyone in the household:

• Prepare scripts for reaching the right person
• "Is [Name] available?"
• Leave callbacks for specific individuals

Higher Answer Rates

Landline users screen less aggressively:

• Unknown numbers answered more often
• Toll-free numbers less suspicious
• CNAM display more prominent

VoIP Number Considerations

VoIP numbers require special handling:

• Business lines — May reach receptionist first
• Google Voice/Skype — Heavy screening, may not answer
• Fraud risk — Easier to obtain anonymously
• SMS variable — Some VoIP supports SMS, some doesn't

Segmentation Strategy

# Segment contacts by line type
def segment_contacts(contacts):
    segments = {
        'mobile_daytime': [],
        'mobile_evening': [],
        'landline_evening': [],
        'landline_weekend': [],
        'business': [],
        'voip_review': []
    }

    for contact in contacts:
        line_type = contact.line_type

        if line_type == 'wireless':
            segments['mobile_daytime'].append(contact)
            segments['mobile_evening'].append(contact)
        elif line_type == 'landline':
            if contact.is_business:
                segments['business'].append(contact)
            else:
                segments['landline_evening'].append(contact)
                segments['landline_weekend'].append(contact)
        elif line_type == 'voip':
            segments['voip_review'].append(contact)

    return segments

Measuring Results by Line Type

Best Practices

1. Always check line type before campaign assignment
2. Use local presence for mobile numbers
3. Adjust call times based on line type
4. Train agents on line-type-specific scripts
5. Track metrics separately for mobile vs. landline
6. Consider SMS as follow-up for mobile only